本文基于异氰酸酯的原位捕获,报道了Passerini / Staudinger / aza-Wittig反应的串联反应策略。根据这一策略,异氰化物可在原位合成,并立即用作一罐中Passerini反应和后修饰串联反应的底物。此外,还使用以下方法合成了两种新型化合物:5-氧代-3,5-二氢苯并[ e ] [1,4]氧氮杂卓和6-氧代-5,6-二氢-2 H -1,4-恶嗪。一站式反应策略,其中包括五步转化。
One-Pot Synthesis of 2,4,5-Trisubstituted Oxazoles via a Tandem Passerini Three-Component Coupling/Staudinger/Aza-Wittig/Isomerization Reaction
作者:Ming-Wu Ding、Long Wang、Zhi-Lin Ren、Min Chen
DOI:10.1055/s-0033-1340596
日期:——
2,4,5-Trisubstituted oxazoles were prepared via a tandem Passerini three-component coupling/Staudinger/aza-Wittig/isomerization reaction in one-pot fashion, starting from easily accessible α-azidocinnamaldehyde s , acids, isocyanide and triphenylphosphine.