124932-14-5Relevant articles and documents
Direct conversion of esters to secondary amides using Tin(II) reagents
Wang,Restituyo,Roskamp
, p. 7217 - 7220 (1993)
We have developed tow new procedures for the direct conversion of esters to secondary amides. In our first procedure, secondary amides can be prepared in 83-98% yield starting from glycol esters. Addition of Sn[N(TMS)2]2 and a primary amine to the glycol ester generates an intermediate tin(II) akoxy amide, which delivers the amino group intramolecularly to give the amide. A second general procedure for the preparation of secondary amides starts with methyl esters. Treatment of methyl esters with a tin reagent derived from Sn[N(TMS)2]2, Me2NCH2CH2OH, and a primary amine yields secondary amides in 87-98% yield.
A CONVENIENT SYNTHESIS OF AMIDES FROM CARBOXYLIC ACIDS AND PRIMARY AMINES
Cossy, J.,Pale-Grosdemange, C.
, p. 2771 - 2774 (2007/10/02)
A convenient method for the formation of carboxamides from carboxylic acids and primary amines in the presence of molecular sieves is described.This process is very chemoselective.