Hafnium-Catalyzed Direct Amide Formation at Room Temperature
作者:Helena Lundberg、Hans Adolfsson
DOI:10.1021/acscatal.5b00385
日期:2015.6.5
[Hf(Cp)2Cl2], as catalyst. Amino acids are transformed into their corresponding amides without racemization, and the catalyst displays full selectivity for the amidation of carboxylic acids overesters. Electronic properties of the carboxylic acids were found to have a strong influence on the rate of the amidation reaction, and the need for a balanced amount of molecularsieves was observed to be