| abstract |
A PROCESS FOR ISOMERIZATION OF CARBOXYLIC ACIDS OR ANHYDRIDES COMPRISING CONTACTING THE ACID OR ANHYDRIDE AT ELEVATED TEMPERATURE IN AN ESSENTIALLY CLOSED SYSTEM WITH A COMPLEX CATALYST COMPRISING A GROUP VIII NOBLE METAL AND A BIPHYLLIC LIGAND FROM THE GROUP CONSISTING OF ORGANIC PHOSPHINES, ARSINES AND STIBINES, FOR A TIME SUFFICIENT TO FORM AN ISOMER OF THE ACID OR ANHYDRIDE. THE PRODUCT ACIDS AND ANHYDRIDES ARE USEFUL FOR PREPARATION OF A WIDE VARIETY PF PRODUCTS SUCH AS PLASTICIZERS, ESTER SOLVENTS, DETERGENTS, ETC. |