在此,我们开发了一种新的SnCl 2介导的ANRORC(亲核试剂加成、开环和闭环)类重排,用于合成3-氨基-2-取代-喹唑啉-4(3 H )-one 2-(2-硝基苯基)-5-取代-1,3,4-恶二唑。新方法依赖于溶剂,具有使用绿色溶剂系统(即乙醇/水)、高产率和简单后处理的特点。将溶剂改为乙腈即可独家合成还原产物。
intramolecular decarboxylative coupling reaction for the construction of 2-(1,3,4-oxadiazol-2-yl)aniline derivatives was developed from readily available isatins and hydrazides by virtue of electrochemistry. In this reaction, isatins were employed as amino-attached C1 sources, providing a variety of 2-(1,3,4-oxadiazol-2-yl)aniline derivatives with moderate to good yields.
A visible-light-induced synthesis of 2,5-disubstituted1,3,4-oxadiazoles from simple diketones and hydrazides with the assistant of the photocatalyst eosin Y catalyzed decarboxylation and cyclization under mild conditions has been discovered. The reaction tolerates a wide range of functional groups and gives a variety of valuable 1,3,4-oxadiazoles in moderate to good yields. Finally, a plausible reaction