METHOD FOR PRODUCING 2-CYANOACETIC ACID ANHYDRIDE AND FURTHER REACTION PRODUCTS THEREOF
申请人:Loctite (R&D) Limited Ltd.
公开号:US20130131370A1
公开(公告)日:2013-05-23
The present invention relates to a process for producing 2-cyanoacetic acid anhydride, comprising the steps of a) preparing a reaction mixture, containing as reactants 2-cyanoacetic acid, and at least one C
4-20
carboxylic acid anhydride in at least one organic solvent, wherein the molar ratio of 2-cyanoacetic acid to C
4-20
carboxylic acid anhydride in said reaction mixture is greater than 1.5:1, and b) subjecting the reaction mixture to a temperature of 0° C. to 100° C. to form 2-cyanoacetic acid anhydride. The present invention also relates to process for producing 2-cyanoacetic acid esters, 2-cyanoacetic acid amides and/or 2-cyanoacetic acid thioesters from 2-cyanoacetic acid anhydride.