Cp*Rh(<scp>iii</scp>)-catalyzed regioselective cyclization of aromatic amides with allenes
作者:Jing Liu、Deng-Yin Liu、Qian Yang、Yao-Fu Zeng、Xiao-Li Wang、Peng-Fei Wang、Yu-Jun Ruan、Miao-Miao Wen、Shang-Shi Zhang、Li-da Du、Xu-Ge Liu
DOI:10.1039/d3cc05342c
日期:——
A new Cp*Rh(III)-catalyzed regioselective cyclization reaction of aromatic amides with allenes is reported. The use of allenyl derivatives bearing a directing-group assistant as a reaction promoter was the key to the success of this protocol. In this catalytic system, N-(pivaloyloxy)benzamide substrates react with allenes via Rh–σ–alkenyl intermediates, while N-(pivaloyloxy) indol substrates react
报道了一种新的 Cp*Rh( III ) 催化的芳香酰胺与丙二烯的区域选择性环化反应。使用带有导向基助剂的丙二烯基衍生物作为反应促进剂是该方案成功的关键。在该催化体系中, N- (新戊酰氧基)苯甲酰胺底物通过Rh-σ-烯基中间体与丙二烯反应,而N- (新戊酰氧基)吲哚底物通过Rh-π-烯丙基中间体反应。这些反应具有反应条件温和、底物范围广、官能团相容性高等特点,得到了多种高价值的异喹啉酮和嘧啶并[1,6- a ]吲哚-1( 2H )-1骨架化合物。还研究了合成应用和主要机制。