Zm. Jaszay et al., PREPARATION OF ESTERS AND AMIDES FROM CARBOXYLIC-ACIDS BY ACTIVATION WITH DIALKYL PHOSPHITE-CARBON TETRACHLORIDE MIXTURE, Synthetic communications, 28(15), 1998, pp. 2761-2768
A simple one pot phase transfer catalytic method is described for the
synthesis of carboxylic amides and esters from carboxylic acids and am
ines or alcohols, respectively. For the activation of the carboxylic a
cids ''in situ'' generated phosphoric acid diester chlorides were appl
ied.