Mild Esterification and Transesterification of Carboxylic Acids Catalyzed by Tetracyanoethylene and Dicyanoketene Dimethyl Acetal
作者:Yukio Masaki、Nobuyuki Tanaka、Tsuyoshi Miura
DOI:10.1246/cl.1997.55
日期:1997.1
A π-acid tetracyanoethylene (TCNE) and its derivative dicyanoketene dimethyl acetal (DCKDMA) were found to catalyze esterification of lauric acid with various types of alcohols. This mathod was successfully applied to methyl esterification of a variety of carboxylic acids including aromatic, α,β-unsaturated, α-hydroxy, and N-Cbz and N-Boc-protected α-amino acids without racemization at the range from
发现 π 酸四氰基乙烯 (TCNE) 及其衍生物二氰基烯酮二甲基乙缩醛 (DCKDMA) 可催化月桂酸与各种醇的酯化反应。该方法成功地应用于多种羧酸的甲酯化,包括芳香族、α,β-不饱和、α-羟基和 N-Cbz 和 N-Boc 保护的 α-氨基酸,在室温至60℃。还发现 TCNE 在月桂酸甲酯的酯交换反应中用作催化剂。