铜催化的2-溴苯甲醛,芳基甲基酮和叠氮化钠的多组分多米诺反应:获得1 H- [1,2,3] Triazolo [4,5- c ]喹啉衍生物
摘要:
已经开发了一种实用的铜催化多组分反应,用于从可商购的2-溴苯甲醛,芳基甲基酮和叠氮化钠合成1 H- [1,2,3]三唑并[4,5- c ]喹啉衍生物。该协议集成了连续的碱促进的缩合,[3 + 2]环加成,铜催化的S N Ar和脱氮环化序列。初步的机理研究表明,CuBr 2充当多功能催化剂以简化该多米诺骨牌工艺。温和的催化体系使一次操作即可有效构建一个C–C和四个C–N键。
A visible light‐induced photocatalytic intramolecular cyclization of styrylazides has been developed in the presence of the ruthenium complex Ru(bpy)3Cl2 (0.5 mol%) as photocatalyst at room temperature. The present photocatalytic strategy features operational simplicity as well as high functional group tolerance, and provides a facile access to various 2‐substituted N‐free indoles in good to excellent