Tandem oxidative amidation of benzyl alcohols with amine hydrochloride salts catalysed by iron nitrate
摘要:
A tandem process for the oxidative amidation of benzyl alcohols with amine hydrochloride salts has been developed using inexpensive Fe(NO3)(3) as the catalyst, air and aqueous t-butyl hydroperoxide as oxidants. A wide range of benzamides have been synthesized under mild conditions. This greener amide formation method provides an economical and practical assess to benzamides from readily available and inexpensive starting materials. (C) 2013 Elsevier Ltd. All rights reserved.
Copper-Catalyzed Oxidative Amidation of Aldehydes with Amine Salts: Synthesis of Primary, Secondary, and Tertiary Amides
作者:Subhash Chandra Ghosh、Joyce S. Y. Ngiam、Abdul M. Seayad、Dang Thanh Tuan、Christina L. L. Chai、Anqi Chen
DOI:10.1021/jo301252c
日期:2012.9.21
aldehydes with economic ammonium chloride or amine hydrochloride salts has been developed for the synthesis of a wide variety of amides by using inexpensive copper sulfate or copper(I) oxide as a catalyst and aqueous tert-butyl hydroperoxide as an oxidant. This amidation reaction is operationally straightforward and provides primary, secondary, and tertiary amides in good to excellent yields for most
A one-step route to azomethine ylides via chloroiminium salts
作者:Rosaleen J. Anderson、Andrei S. Batsanov、Natalia Belskaia、Paul W. Groundwater、Otto Meth-Cohn、Andrey Zaytsev
DOI:10.1016/j.tetlet.2003.11.095
日期:2004.1
A new, one-step procedure for the generation of azomethineylides, 4 and 20, via chloroiminium salts, 3 and 19, is reported. The generation of the azomethineylides was confirmed by their trapping with dimethyl acetylenedicarboxylate (DMAD) which, upon spontaneous 1,4-dehydrochlorination, gave the corresponding pyrroles 17 and 21.