| abstract |
(57) Abstract: (Corrected) PROBLEM TO BE SOLVED: To provide an improved method for producing pyrocarbonic acid diester, a novel pyrocarbonic acid diester produced by the method, and use thereof. In a non-polar inert solvent, the following formula (I I) At least one ester carbonate of the formula (IV) 40 to 50 mol% of the sulfochloride of In the presence of 1 to 3 mol% of the heterocyclic aromatic amine in the temperature range of -10 ° C to + 25 ° C to produce a pyrocarbonic acid diester of the following formula (I). |