A protocol for amide bond formation with electron deficient amines and sterically hindered substrates
作者:Maria E. Due-Hansen、Sunil K. Pandey、Elisabeth Christiansen、Rikke Andersen、Steffen V. F. Hansen、Trond Ulven
DOI:10.1039/c5ob02129d
日期:——
A protocol for amide coupling by in situ formation of acyl fluorides and reaction with amines at elevated temperature has been developed and found to be efficient for coupling of sterically hindered substrates and electron deficient amines where standard methods failed.
作者:Pieter Mampuys、Eelco Ruijter、Romano V. A. Orru、Bert U. W. Maes
DOI:10.1021/acs.orglett.8b01654
日期:2018.7.20
The synthesis of secondary amides from readily accessible and bench-stable substituted S-phenyl thiocarbamates and Grignard reactants is reported. Oxidative workup allows recycling of the thiolate leaving group as diphenyl disulfide. Diphenyl disulfide can be transformed into S-phenyl benzenethiosulfonate, a reactant required for thiocarbamate synthesis. This amide synthesis is suitable for the preparation