Copper(II) Acetate/Oxygen-Mediated Nucleophilic Addition and Intramolecular CH Activation/CN or CC Bond Formation: One-Pot Synthesis of Benzimidazoles or Quinazolines
作者:Hua-Feng He、Zhi-Jing Wang、Weiliang Bao
DOI:10.1002/adsc.201000469
日期:2010.11.22
Diarylcarbodiimides or benzylphenylcarbodiimides are converted to 1,2-disubstituted benzimidazoles or 1,2-disustituted quinazolines via addition/intramolecular CH bondactivation/C-N or CC bond forming reaction using copper(II) acetate/oxygen [Cu(OAc)2/O2] as the oxidant at 100 °C in one-pot cascade procedure.
使用乙酸铜(II)/氧[Cu(OAc)2 / O 2)通过加成/分子内CH键活化/ CN或CC键形成反应将二芳基碳二亚胺或苄基苯基碳二亚胺转化为1,2-二取代的苯并咪唑或1,2-取代的喹唑啉以一锅级联程序在100°C下作为氧化剂。
Selective Synthesis of 4-Alkylidene-β-lactams and <i>N</i>,<i>N</i>′-Diarylamidines from Azides and Aryloxyacetyl Chlorides via a Ketenimine-Participating One-Pot Cascade Process
作者:Yun-Yun Yang、Wang-Ge Shou、Deng Hong、Yan-Guang Wang
DOI:10.1021/jo702733h
日期:2008.5.1
A one-pot cascade approach to 4-alkylidene-β-lactams and N,N′-diarylamidines from aryl azides and aryloxyacetyl chlorides has been developed. The chemical outcome of the reaction can be controlled selectively by an appropriate choice of the stoichiometric ratio of different substrates and reagents. The products should find use in pharmaceutical discovery, especially in the development of new antimicrobial