Malonic acid: Difference between revisions
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'''Malonic acid''' |
'''Malonic acid''' is a [[dicarboxylic acid]] with structure CH<sub>2</sub>(COOH)<sub>2</sub>. The [[ion]]ized form of malonic acid, as well as its [[ester]]s and [[salt (chemistry)|salt]]s, are known as '''malonates'''. For example, [[diethyl malonate]] is malonic acid's [[Ethyl group|diethyl]] [[ester]]. The name originates from the [[Greek language|Greek]] word μᾶλον (''malon'') meaning 'apple'. |
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==History== |
==History== |
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[[Image:Synthesis of malonic acid.png|thumb|center|650px|Preparation of malonic acid from [[chloroacetic acid]].]] |
[[Image:Synthesis of malonic acid.png|thumb|center|650px|Preparation of malonic acid from [[chloroacetic acid]].]] |
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[[Sodium carbonate]] generates the sodium [[salt (chemistry)|salt]], which is then reacted with [[sodium cyanide]] to provide the sodium salt of [[cyanoacetic acid]] via a [[nucleophilic substitution]]. The [[nitrile]] group can be [[hydrolysis|hydrolyzed]] with [[sodium hydroxide]] to sodium malonate, and acidification affords malonic acid. Industrially, however, malonic acid is produced by hydrolysis of [[dimethyl malonate]] or [[diethyl malonate]].<ref>{{cite patent |country=US |number=2373011 |status=patent |gdate=1945-04-03 |fdate=1942-09-22 | inventor = Britton EC, Ezra M |title=Production of malonic acid |assign1=Dow Chemical Co |class=}}</ref> It has also been produced through fermentation of [[glucose]].<ref>{{cite patent | title = Recombinant host cells for the production of malonate. | country = US | number = 20200172941| inventor = Dietrich JA | assign1 = Lygos Inc }}</ref> |
[[Sodium carbonate]] generates the sodium [[salt (chemistry)|salt]], which is then reacted with [[sodium cyanide]] to provide the sodium salt of [[cyanoacetic acid]] via a [[nucleophilic substitution]]. The [[nitrile]] group can be [[hydrolysis|hydrolyzed]] with [[sodium hydroxide]] to sodium malonate, and acidification affords malonic acid. Industrially, however, malonic acid is produced by hydrolysis of [[dimethyl malonate]] or [[diethyl malonate]].<ref>{{cite patent |country=US |number=2373011 |status=patent |gdate=1945-04-03 |fdate=1942-09-22 | inventor = Britton EC, Ezra M |title=Production of malonic acid |assign1=Dow Chemical Co |class=}}</ref> It has also been produced through [[fermentation]] of [[glucose]].<ref>{{cite patent | title = Recombinant host cells for the production of malonate. | country = US | number = 20200172941| inventor = Dietrich JA | assign1 = Lygos Inc }}</ref> |
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==Reactions== |
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==Organic reactions== |
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Malonic acid reacts as a typical carboxylic acid |
Malonic acid reacts as a typical carboxylic acid forming [[amide]], ester, and [[acyl chloride|chloride]] derivatives.<ref>{{cite book |doi=10.1002/0471740039.vec1571 |chapter=Malonic Acid and Derivatives |title=Van Nostrand's Encyclopedia of Chemistry |year=2005 |isbn=0471740039 | veditors = Pollak P, Romeder G |last1=Pollak |first1=Peter |last2=Romeder |first2=Gérard }}</ref> [[Malonic anhydride]] can be used as an intermediate to mono-ester or amide derivatives, while [[malonyl chloride]] is most useful to obtain diesters or diamides. |
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In a well-known reaction, malonic acid [[condensation reaction|condenses]] with [[urea]] to form [[barbituric acid]]. Malonic acid may also be condensed with [[acetone]] to form [[Meldrum's acid]], a versatile intermediate in further transformations. The esters of malonic acid are also used as a <sup>−</sup>CH<sub>2</sub>COOH [[synthon]] in the [[malonic ester synthesis]]. |
In a well-known reaction, malonic acid [[condensation reaction|condenses]] with [[urea]] to form [[barbituric acid]]. Malonic acid may also be condensed with [[acetone]] to form [[Meldrum's acid]], a versatile intermediate in further transformations. The esters of malonic acid are also used as a <sup>−</sup>CH<sub>2</sub>COOH [[synthon]] in the [[malonic ester synthesis]]. |
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=== Mitochondrial fatty acid synthesis === |
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| ⚫ | Malonic acid is the |
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| ⚫ | Additionally, the [[coenzyme A]] derivative of malonate, malonyl-CoA, is an important precursor in [[Cytosol|cytosolic]] fatty acid biosynthesis along with [[acetyl CoA]]. Malonyl CoA is formed there from acetyl CoA by the action of [[acetyl-CoA carboxylase]], and the malonate is transferred to an [[acyl carrier protein]] to be added to a fatty acid chain. |
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===Briggs–Rauscher reaction=== |
===Briggs–Rauscher reaction=== |
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===Knoevenagel condensation=== |
===Knoevenagel condensation=== |
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Malonic acid is used to prepare a,b-unsaturated carboxylic acids by condensation and decarboxylation. [[Cinnamic acid]]s are prepared in this way: |
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:{{chem2|CH2(CO2H)2 + ArCHO -> ArCH\dCHCO2H + H2O + CO2}} |
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| ⚫ | |||
[[Image:KnoevenagelGeneral.png|thumb|center|400px|Z=COOH (malonic acid) or Z=COOR' (malonate ester)]] |
[[Image:KnoevenagelGeneral.png|thumb|center|400px|Z=COOH (malonic acid) or Z=COOR' (malonate ester)]] |
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When malonic acid |
When malonic acid is condensed in hot pyridine, the condensation is accompanied by [[decarboxylation]], the so-called [[Doebner modification]].<ref>{{OrgSynth |first1= Peter J. |last1= Jessup |first2= C. Bruce |last2= Petty |first3= Jan |last3= Roos |first4= Larry E. |last4= Overman |author-link4= Larry E. Overman | title = 1-''N''-Acylamino-1,3-dienes from 2,4-Pentadienoic Acids by the Curtius Rearrangement: benzyl ''trans''-1,3-butadiene-1-carbamate | volume = 59 | page = 1 | year = 1979 | doi = 10.15227/orgsyn.059.0001}}</ref><ref>{{cite journal |doi=10.15227/orgsyn.024.0092 |title=Sorbic Acid |journal=Organic Syntheses |date=1944 |volume=24 |page=92|first1=C. F. H. |last1=Allen|first2=J. |last2=VanAllan }}</ref><ref>{{cite journal| vauthors = Doebner O |title=Ueber die der Sorbinsäure homologen, ungesättigten Säuren mit zwei Doppelbindungen|journal=Berichte der Deutschen Chemischen Gesellschaft |year=1902|volume=35|pages=1136–36|doi=10.1002/cber.190203501187 |url = https://zenodo.org/record/1426042}}</ref> |
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[[Image:Doebner modification.png|center|thumb|600px|The Doebner modification of the Knoevenagel condensation.]]{{clear}} |
[[Image:Doebner modification.png|center|thumb|600px|The Doebner modification of the Knoevenagel condensation.]]{{clear}} |
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Thus, for example, the reaction product of [[acrolein]] and malonic acid in [[pyridine]] is ''trans-2,4-Pentadienoic acid'' with one carboxylic acid group and not two.<ref>{{OrgSynth| vauthors = Jessup PJ, Petty CB, Roos J, Overman LE |title=1-N-Acylamino-1,3-dienes from 2,4-pentadienoic acids by the Curtius rearrangement: benzyl trans-1,3-butadiene-1-carbamate |collvol=6|collvolpages=95|year=1988|prep=cv6p0095}}</ref> |
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===Preparation of carbon suboxide=== |
===Preparation of carbon suboxide=== |
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Malonic acid does not readily form an [[acid anhydride|anhydride]], dehydration gives [[carbon suboxide]] instead: |
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:{{chem2|CH2(CO2H)2 -> O\dC\dC\dC\dO + 2 H2O}} |
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| ⚫ | The transformation is achieved by warming a dry mixture of [[phosphorus pentoxide]] ({{Chem2|P4O10}}) and malonic acid.<ref>{{cite journal|author-link=Otto Diels|vauthors=Diels O, Wolf B|year=1906|title=Ueber das Kohlensuboxyd. I|url=https://zenodo.org/record/1426170|journal=[[Chemische Berichte|Chem. Ber.]]|volume=39|pages=689–697|doi=10.1002/cber.190603901103}}</ref> It reacts in a similar way to [[malonic anhydride]], forming malonates.<ref>{{cite journal|vauthors=Perks HM, Liebman JF|year=2000|title=Paradigms and Paradoxes: Aspects of the Energetics of Carboxylic Acids and Their Anhydrides|journal=Structural Chemistry|volume=11|issue=4|pages=265–269|doi=10.1023/A:1009270411806|s2cid=92816468 }}</ref> |
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==Applications== |
==Applications== |
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==Biochemistry== |
==Biochemistry== |
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| ⚫ | Malonic acid is the precursor in [[Fatty acid synthesis#Mitochondrial fatty acid synthesis|mitochondrial fatty acid synthesis]] (mtFASII), in which it is converted to [[malonyl-CoA]] by [[ACSF3|acyl-CoA synthetase family member 3]] (ACSF3).<ref>{{Cite journal |last1=Witkowski |first1=Andrzej |last2=Thweatt |first2=Jennifer |last3=Smith |first3=Stuart |date=2011 |title=Mammalian ACSF3 Protein Is a Malonyl-CoA Synthetase That Supplies the Chain Extender Units for Mitochondrial Fatty Acid Synthesis |journal=Journal of Biological Chemistry |language=en |volume=286 |issue=39 |pages=33729–33736 |doi=10.1074/jbc.M111.291591 |doi-access=free |pmc=3190830 |pmid=21846720}}</ref><ref>{{Cite journal |last1=Bowman |first1=Caitlyn E. |last2=Rodriguez |first2=Susana |last3=Selen Alpergin |first3=Ebru S. |last4=Acoba |first4=Michelle G. |last5=Zhao |first5=Liang |last6=Hartung |first6=Thomas |last7=Claypool |first7=Steven M. |last8=Watkins |first8=Paul A. |last9=Wolfgang |first9=Michael J. |date=2017 |title=The Mammalian Malonyl-CoA Synthetase ACSF3 Is Required for Mitochondrial Protein Malonylation and Metabolic Efficiency |journal=Cell Chemical Biology |language=en |volume=24 |issue=6 |pages=673–684.e4 |doi=10.1016/j.chembiol.2017.04.009 |pmc=5482780 |pmid=28479296}}</ref> |
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| ⚫ | Additionally, the [[coenzyme A]] derivative of malonate, malonyl-CoA, is an important precursor in [[Cytosol|cytosolic]] fatty acid biosynthesis along with [[acetyl CoA]]. Malonyl CoA is formed there from acetyl CoA by the action of [[acetyl-CoA carboxylase]], and the malonate is transferred to an [[acyl carrier protein]] to be added to a fatty acid chain. |
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Malonic acid is the classic example of a [[Competitive inhibition|competitive inhibitor]] of the [[enzyme]] [[succinate dehydrogenase]] (complex II), in the [[oxidative phosphorylation|respiratory electron transport chain]].<ref name="pardee_potter">{{cite journal | vauthors = Pardee AB, Potter VR | title = Malonate inhibition of oxidations in the Krebs tricarboxylic acid cycle | journal = The Journal of Biological Chemistry | volume = 178 | issue = 1 | pages = 241–250 | date = March 1949 | pmid = 18112108 | doi = 10.1016/S0021-9258(18)56954-4 | doi-access = free }}</ref> It binds to the [[active site]] of the enzyme without reacting, competing with the usual substrate [[Succinic acid|succinate]] but lacking the −CH<sub>2</sub>CH<sub>2</sub>− group required for dehydrogenation. This observation was used to deduce the structure of the active site in succinate dehydrogenase. Inhibition of this enzyme decreases cellular respiration.<ref>{{cite journal | vauthors = Potter VR, Dubois KP | title = Studies on the Mechanism of Hydrogen Transport in Animal Tissues : VI. Inhibitor Studies with Succinic Dehydrogenase | journal = The Journal of General Physiology | volume = 26 | issue = 4 | pages = 391–404 | date = March 1943 | pmid = 19873352 | pmc = 2142566 | doi = 10.1085/jgp.26.4.391 }}</ref><ref>{{cite journal |doi=10.1016/0926-6569(64)90182-8 |title=Studies on succinate dehydrogenase |year=1964 | vauthors = Dervartanian DV, Veeger C |journal=Biochimica et Biophysica Acta (BBA) - Specialized Section on Enzymological Subjects |volume=92 |issue=2 |pages=233–247 }}</ref> Since malonic acid is a natural component of many foods, it is present in mammals including humans.<ref>{{cite web |url=https://hmdb.ca/metabolites/HMDB0000691 |title=Metabocard for Malonic acid |website= Human Metabolome Database |access-date=2020-10-06 |date=2020-03-13 }}</ref> |
Malonic acid is the classic example of a [[Competitive inhibition|competitive inhibitor]] of the [[enzyme]] [[succinate dehydrogenase]] (complex II), in the [[oxidative phosphorylation|respiratory electron transport chain]].<ref name="pardee_potter">{{cite journal | vauthors = Pardee AB, Potter VR | title = Malonate inhibition of oxidations in the Krebs tricarboxylic acid cycle | journal = The Journal of Biological Chemistry | volume = 178 | issue = 1 | pages = 241–250 | date = March 1949 | pmid = 18112108 | doi = 10.1016/S0021-9258(18)56954-4 | doi-access = free }}</ref> It binds to the [[active site]] of the enzyme without reacting, competing with the usual substrate [[Succinic acid|succinate]] but lacking the −CH<sub>2</sub>CH<sub>2</sub>− group required for dehydrogenation. This observation was used to deduce the structure of the active site in succinate dehydrogenase. Inhibition of this enzyme decreases cellular respiration.<ref>{{cite journal | vauthors = Potter VR, Dubois KP | title = Studies on the Mechanism of Hydrogen Transport in Animal Tissues : VI. Inhibitor Studies with Succinic Dehydrogenase | journal = The Journal of General Physiology | volume = 26 | issue = 4 | pages = 391–404 | date = March 1943 | pmid = 19873352 | pmc = 2142566 | doi = 10.1085/jgp.26.4.391 }}</ref><ref>{{cite journal |doi=10.1016/0926-6569(64)90182-8 |title=Studies on succinate dehydrogenase |year=1964 | vauthors = Dervartanian DV, Veeger C |journal=Biochimica et Biophysica Acta (BBA) - Specialized Section on Enzymological Subjects |volume=92 |issue=2 |pages=233–247 }}</ref> Since malonic acid is a natural component of many foods, it is present in mammals including humans.<ref>{{cite web |url=https://hmdb.ca/metabolites/HMDB0000691 |title=Metabocard for Malonic acid |website= Human Metabolome Database |access-date=2020-10-06 |date=2020-03-13 }}</ref> |
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Latest revision as of 02:27, 6 September 2024
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| Names | |
|---|---|
| Preferred IUPAC name
Propanedioic acid[1] | |
| Other names
Methanedicarboxylic acid
| |
| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| DrugBank | |
| ECHA InfoCard | 100.005.003 |
PubChem CID
|
|
| UNII | |
CompTox Dashboard (EPA)
|
|
| |
| |
| Properties | |
| C3H4O4 | |
| Molar mass | 104.061 g·mol−1 |
| Density | 1.619 g/cm3 |
| Melting point | 135 to 137 °C (275 to 279 °F; 408 to 410 K) (decomposes) |
| Boiling point | decomposes |
| 763 g/L | |
| Acidity (pKa) | pKa1 = 2.83[2] pKa2 = 5.69[2] |
| -46.3·10−6 cm3/mol | |
| Related compounds | |
Other anions
|
Malonate |
Related carboxylic acids
|
Oxalic acid Propionic acid Succinic acid Fumaric acid |
Related compounds
|
Malondialdehyde Dimethyl malonate |
| Hazards | |
| Safety data sheet (SDS) | External MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Malonic acid is a dicarboxylic acid with structure CH2(COOH)2. The ionized form of malonic acid, as well as its esters and salts, are known as malonates. For example, diethyl malonate is malonic acid's diethyl ester. The name originates from the Greek word μᾶλον (malon) meaning 'apple'.
History
[edit]Malonic acid[3] is a naturally occurring substance found in many fruits and vegetables.[4] There is a suggestion that citrus fruits produced in organic farming contain higher levels of malonic acid than fruits produced in conventional agriculture.[5]
Malonic acid was first prepared in 1858 by the French chemist Victor Dessaignes via the oxidation of malic acid.[3][6]
Structure and preparation
[edit]The structure has been determined by X-ray crystallography[7] and extensive property data including for condensed phase thermochemistry are available from the National Institute of Standards and Technology.[8] A classical preparation of malonic acid starts from chloroacetic acid:[9]
Sodium carbonate generates the sodium salt, which is then reacted with sodium cyanide to provide the sodium salt of cyanoacetic acid via a nucleophilic substitution. The nitrile group can be hydrolyzed with sodium hydroxide to sodium malonate, and acidification affords malonic acid. Industrially, however, malonic acid is produced by hydrolysis of dimethyl malonate or diethyl malonate.[10] It has also been produced through fermentation of glucose.[11]
Reactions
[edit]Malonic acid reacts as a typical carboxylic acid forming amide, ester, and chloride derivatives.[12] Malonic anhydride can be used as an intermediate to mono-ester or amide derivatives, while malonyl chloride is most useful to obtain diesters or diamides. In a well-known reaction, malonic acid condenses with urea to form barbituric acid. Malonic acid may also be condensed with acetone to form Meldrum's acid, a versatile intermediate in further transformations. The esters of malonic acid are also used as a −CH2COOH synthon in the malonic ester synthesis.
Briggs–Rauscher reaction
[edit]Malonic acid is a key component in the Briggs–Rauscher reaction, the classic example of an oscillating chemical reaction.[13]
Knoevenagel condensation
[edit]Malonic acid is used to prepare a,b-unsaturated carboxylic acids by condensation and decarboxylation. Cinnamic acids are prepared in this way:
- CH2(CO2H)2 + ArCHO → ArCH=CHCO2H + H2O + CO2
In this, the so-called Knoevenagel condensation, malonic acid condenses with the carbonyl group of an aldehyde or ketone, followed by a decarboxylation.
When malonic acid is condensed in hot pyridine, the condensation is accompanied by decarboxylation, the so-called Doebner modification.[14][15][16]
Preparation of carbon suboxide
[edit]Malonic acid does not readily form an anhydride, dehydration gives carbon suboxide instead:
- CH2(CO2H)2 → O=C=C=C=O + 2 H2O
The transformation is achieved by warming a dry mixture of phosphorus pentoxide (P4O10) and malonic acid.[17] It reacts in a similar way to malonic anhydride, forming malonates.[18]
Applications
[edit]Malonic acid is a precursor to specialty polyesters. It can be converted into 1,3-propanediol for use in polyesters and polymers (whose usefulness is unclear though). It can also be a component in alkyd resins, which are used in a number of coatings applications for protecting against damage caused by UV light, oxidation, and corrosion. One application of malonic acid is in the coatings industry as a crosslinker for low-temperature cure powder coatings, which are becoming increasingly valuable for heat sensitive substrates and a desire to speed up the coatings process.[19] The global coatings market for automobiles was estimated to be $18.59 billion in 2014 with projected combined annual growth rate of 5.1% through 2022.[20]
It is used in a number of manufacturing processes as a high value specialty chemical including the electronics industry, flavors and fragrances industry,[4] specialty solvents, polymer crosslinking, and pharmaceutical industry. In 2004, annual global production of malonic acid and related diesters was over 20,000 metric tons.[21] Potential growth of these markets could result from advances in industrial biotechnology that seeks to displace petroleum-based chemicals in industrial applications.
In 2004, malonic acid was listed by the US Department of Energy as one of the top 30 chemicals to be produced from biomass.[22]
In food and drug applications, malonic acid can be used to control acidity, either as an excipient in pharmaceutical formulation or natural preservative additive for foods.[4]
Malonic acid is used as a building block chemical to produce numerous valuable compounds,[23] including the flavor and fragrance compounds gamma-nonalactone, cinnamic acid, and the pharmaceutical compound valproate.
Malonic acid (up to 37.5% w/w) has been used to cross-link corn and potato starches to produce a biodegradable thermoplastic; the process is performed in water using non-toxic catalysts.[24][25] Starch-based polymers comprised 38% of the global biodegradable polymers market in 2014 with food packaging, foam packaging, and compost bags as the largest end-use segments.[26]
Eastman Kodak company and others use malonic acid and derivatives as a surgical adhesive.[27]
Pathology
[edit]If elevated malonic acid levels are accompanied by elevated methylmalonic acid levels, this may indicate the metabolic disease combined malonic and methylmalonic aciduria (CMAMMA). By calculating the malonic acid to methylmalonic acid ratio in blood plasma, CMAMMA can be distinguished from classic methylmalonic acidemia.[28]
Biochemistry
[edit]Malonic acid is the precursor in mitochondrial fatty acid synthesis (mtFASII), in which it is converted to malonyl-CoA by acyl-CoA synthetase family member 3 (ACSF3).[29][30]
Additionally, the coenzyme A derivative of malonate, malonyl-CoA, is an important precursor in cytosolic fatty acid biosynthesis along with acetyl CoA. Malonyl CoA is formed there from acetyl CoA by the action of acetyl-CoA carboxylase, and the malonate is transferred to an acyl carrier protein to be added to a fatty acid chain.
Malonic acid is the classic example of a competitive inhibitor of the enzyme succinate dehydrogenase (complex II), in the respiratory electron transport chain.[31] It binds to the active site of the enzyme without reacting, competing with the usual substrate succinate but lacking the −CH2CH2− group required for dehydrogenation. This observation was used to deduce the structure of the active site in succinate dehydrogenase. Inhibition of this enzyme decreases cellular respiration.[32][33] Since malonic acid is a natural component of many foods, it is present in mammals including humans.[34]
Related Chemicals
[edit]The fluorinated version of malonic acide is difluoromalonic acid.[1]
Malonic acid is diprotic; that is, it can donate two protons per molecule. Its first is 2.8 and the second is 5.7.[2] Thus the malonate ion can be HOOCCH2COO− or CH2(COO)2−2. Malonate or propanedioate compounds include salts and esters of malonic acid, such as
References
[edit]- ^ International Union of Pure and Applied Chemistry (2014). Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. The Royal Society of Chemistry. p. 746. doi:10.1039/9781849733069. ISBN 978-0-85404-182-4.
- ^ a b c pKa Data Compiled by R. Williams (pdf; 77 kB) Archived 2010-06-02 at the Wayback Machine
- ^ a b Chisholm, Hugh, ed. (1911). . Encyclopædia Britannica. Vol. 17 (11th ed.). Cambridge University Press. p. 495.
- ^ a b c "Propanedioic acid". The Good Scents Company. Retrieved 2020-10-07.
- ^ Ha CN, Ngoc ND, Ngoc CP, Trung DD, Quang BN (2012). "Organic Acids Concentration in Citrus Juice from Conventional Versus Organic Farming". Acta Horticulturae. 933 (933): 601–606. doi:10.17660/actahortic.2012.933.78. hdl:10400.1/2790. ISSN 0567-7572.
- ^ Dessaignes V (1858). "Note sur un acide obtenu par l'oxydation de l'acide malique"] (Note on an acid obtained by oxidation of malic acid)". Comptes rendus. 47: 76–79.
- ^ Gopalan RS, Kumaradhas P, Kulkarni GU, Rao CN (2000). "An experimental charge density study of aliphatic dicarboxylic acids". Journal of Molecular Structure. 521 (1–3): 97–106. Bibcode:2000JMoSt.521...97S. doi:10.1016/S0022-2860(99)00293-8.
- ^ NIST Chemistry WebBook. "Propanedioic acid".
- ^ Weiner N. "Malonic acid". Organic Syntheses; Collected Volumes, vol. 2, p. 376.
- ^ US patent 2373011, Britton EC, Ezra M, "Production of malonic acid", issued 1945-04-03, assigned to Dow Chemical Co
- ^ US 20200172941, Dietrich JA, "Recombinant host cells for the production of malonate.", assigned to Lygos Inc
- ^ Pollak P, Romeder G (2005). "Malonic Acid and Derivatives". In Pollak P, Romeder G (eds.). Van Nostrand's Encyclopedia of Chemistry. doi:10.1002/0471740039.vec1571. ISBN 0471740039.
- ^ Csepei LI, Bolla C. "The Effect of Salicylic Acid on the Briggs-Rauscher Oscillating Reaction" (PDF). Studia UBB Chemia. 1: 285–300.
- ^ Jessup, Peter J.; Petty, C. Bruce; Roos, Jan; Overman, Larry E. (1979). "1-N-Acylamino-1,3-dienes from 2,4-Pentadienoic Acids by the Curtius Rearrangement: benzyl trans-1,3-butadiene-1-carbamate". Organic Syntheses. 59: 1. doi:10.15227/orgsyn.059.0001.
- ^ Allen, C. F. H.; VanAllan, J. (1944). "Sorbic Acid". Organic Syntheses. 24: 92. doi:10.15227/orgsyn.024.0092.
- ^ Doebner O (1902). "Ueber die der Sorbinsäure homologen, ungesättigten Säuren mit zwei Doppelbindungen". Berichte der Deutschen Chemischen Gesellschaft. 35: 1136–36. doi:10.1002/cber.190203501187.
- ^ Diels O, Wolf B (1906). "Ueber das Kohlensuboxyd. I". Chem. Ber. 39: 689–697. doi:10.1002/cber.190603901103.
- ^ Perks HM, Liebman JF (2000). "Paradigms and Paradoxes: Aspects of the Energetics of Carboxylic Acids and Their Anhydrides". Structural Chemistry. 11 (4): 265–269. doi:10.1023/A:1009270411806. S2CID 92816468.
- ^ Facke T, Subramanian R, Dvorchak M, Feng S (February 2004). "Diethylmalonate blocked isocyanate as crosslinkers for low temperature cure powder coatings.". Proceedings of 31st International Waterborene, High-Solids and Powder Coating Symposium.
- ^ James S. Global Automotive Coatings Market. 2015 Grand View Research Market Report (Report).
- ^ "Malonic acid diesters" (PDF). Inchem. UNEP Publications. Archived from the original (PDF) on 2017-11-18. Retrieved 2015-12-11.
- ^ Werpy TA, Holladay JE, White JF (August 2004). Werpy TA, Petersen G (eds.). Top Value Added Chemicals From Biomass. Volume I: Results of Screening for Potential Candidates from Sugars and Synthesis Gas (PDF) (Report). US Department of Energy. doi:10.2172/926125. OSTI 926125.
- ^ Hildbrand, S.; Pollak, P. Malonic Acid & Derivatives. March 15, 2001. Ullmann's Encyclopedia of Industrial Chemistry
- ^ US 9790350, Netravali AN, Dastidar TG, "Crosslinked native and waxy starch resin compositions and processes for their manufacture.", assigned to Cornell University
- ^ Ghosh Dastidar T, Netravali AN (November 2012). "'Green' crosslinking of native starches with malonic acid and their properties". Carbohydrate Polymers. 90 (4): 1620–8. doi:10.1016/j.carbpol.2012.07.041. PMID 22944425.
- ^ Biodegradable Polymers: Chemical Economics Handbook (Report). IHS Markit. June 2021.
- ^ US 3591676, Hawkins G, Fassett D, "Surgical Adhesive Compositions"
- ^ de Sain-van der Velden MG, van der Ham M, Jans JJ, Visser G, Prinsen HC, Verhoeven-Duif NM, et al. (2016). Morava E, Baumgartner M, Patterson M, Rahman S (eds.). "A New Approach for Fast Metabolic Diagnostics in CMAMMA". JIMD Reports. 30. Berlin, Heidelberg: Springer: 15–22. doi:10.1007/8904_2016_531. ISBN 978-3-662-53681-0. PMC 5110436. PMID 26915364.
- ^ Witkowski, Andrzej; Thweatt, Jennifer; Smith, Stuart (2011). "Mammalian ACSF3 Protein Is a Malonyl-CoA Synthetase That Supplies the Chain Extender Units for Mitochondrial Fatty Acid Synthesis". Journal of Biological Chemistry. 286 (39): 33729–33736. doi:10.1074/jbc.M111.291591. PMC 3190830. PMID 21846720.
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