An optimized and scalable synthesis of propylphosphonic anhydride for general use
摘要:
Propylphosphonic anhydride (T3P (R)) is an effective coupling and dehydrating agent, which has been used for a large number of chemical transformations. An efficient and versatile synthetic method is described to synthesize propylphosphonic anhydride (T3P (R)) in pure form, in an overall yield of 51% in four steps from commercially available diethyl phosphonate. (C) 2015 Elsevier Ltd. All rights reserved.
A convenient synthesis of <i>N</i>-(hetero)arylamides by the oxidative coupling of methylheteroarenes with amines
作者:Anjali Jaiswal、Preeti、Krishna Nand Singh
DOI:10.1039/d2ob01106a
日期:——
An oxidative amidation of 2-methylpyridines/2-methylbenzimidazole with amines using copper acetate and elemental sulfur in DMSO to afford various N-(hetero)arylamides has been accomplished. Mechanistic studies reveal the intermediacy of N-(pyridin-2-ylmethyl)aniline and confirm the role of DMSO as the oxygen source.