Oxidative Amide Synthesis and N-Terminal α-Amino Group Ligation of Peptides in Aqueous Medium
作者:Wing-Kei Chan、Chi-Ming Ho、Man-Kin Wong、Chi-Ming Che
DOI:10.1021/ja064479s
日期:2006.11.1
A new method for oxidative synthesis of amides from alkynes and amines in high yields (up to 96%) using [Mn(2,6-Cl2TPP)Cl] 1 as a catalyst and Oxone/H2O2 as an oxidant in aqueousmedium has been developed. This method could be used for N-terminal α-amino group ligation of unprotected peptides with aryl, aliphatic, and internal alkynes under mild conditions.
Triphenyl borate catalyzed synthesis of amides from carboxylic acids and amines
作者:Seema A. Ghorpade、Dinesh N. Sawant、Nagaiyan Sekar
DOI:10.1016/j.tet.2018.10.030
日期:2018.11
Herein we report triphenyl borate as a new catalyst for synthesis of amides by catalytic condensation of carboxylic acids and amines. Our protocol is applicable for synthesis of wide range of amides furnishing excellent yields up to 92%. In addition developed method requires low catalyst loading, short time, less amount of solvent, works under air atmosphere and notably no need of azeotropic reflux