DEAD-Mediated Oxidative Ugi/Aza-Wittig Reaction for the Synthesis of 5-(1,2,3,4-Tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles Starting from (N-Isocyanimine)triphenylphosphorane
作者:Ming-Wu Ding、Mei Sun、Long Zhao、Yan-Ling Yu
DOI:10.1055/s-0040-1705967
日期:2021.4
A one-pot protocol for the synthesis of 5-(1,2,3,4-tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles via DEAD-mediated oxidative Ugi/aza-Wittig reaction has been developed. The reaction of (N-isocyanimine)triphenylphosphorane, carboxylic acids, and N-aryl-1,2,3,4-tetrahydroisoquinolines produced polysubstituted 5-(1,2,3,4-tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles directly in good yields in the presence
已开发了通过DEAD介导的氧化Ugi / aza-Wittig反应合成5-(1,2,3,4-四氢异喹啉-1-基)-1,3,4-恶二唑的一锅法方案。(N-异氰酸亚胺)三苯基膦烷,羧酸与N-芳基-1,2,3,4-四氢异喹啉的反应生成多取代的5-(1,2,3,4-四氢异喹啉-1-基)-1,3在存在DEAD作为氧化剂的情况下,直接以良好的收率得到4,4-恶二唑。