Abstract Treatment of O‐alkylhydroxylamine hydrochlorides with 2‐acyl‐4,5‐dichloropyridazin‐3(2H)‐ones in the presence of triethylamine or Amberlite® IRA‐67 in acetonitrile gave corresponding O‐alkylhydroxamic acid derivatives in excellent yields. This is an efficient, convenient, and eco‐friendly method.
Design, synthesis and utilization of a novel coupling reagent for the preparation of O-alkyl hydroxamic acids
作者:Nagnnath D. Kokare、Rahul R. Nagawade、Vipul P. Rane、Devanand B. Shinde
DOI:10.1016/j.tetlet.2007.04.058
日期:2007.6
An efficient novel reagent, phosphoric acid diethyl ester 2-phenyl-benzimidazol-1-yl ester, was designed, and synthesized and its applicability was demonstrated for the preparation of O-alkyl hydroxamic acids. The O-alkyl hydroxamic acids of N-protectedaminoacids were also synthesized. The enantiomeric purity of the synthesized compounds were measured using chiral HPLC and the degree of racemization