Palladium-Catalyzed Oxidative Cross-Coupling between Heterocycles and Terminal Alkynes with Low Catalyst Loading
作者:Xiaoming Jie、Yaping Shang、Peng Hu、Weiping Su
DOI:10.1002/anie.201210013
日期:2013.3.25
Direct: With [Pd2(dba)3] as a catalyst, the direct alkynylation of thiophenes bearing a variety of substituents has been accomplished by using terminal alkynes as alkynylating reagents. This protocol is also applicable to other electron‐rich aromatic heterocycles. dba=dibenzylidenacetone.
直接:以[Pd 2(dba)3 ]为催化剂,通过使用末端炔烃作为炔基化试剂,可实现带有多种取代基的噻吩的直接炔基化。该协议也适用于其他富电子芳族杂环。dba =二亚苄基丙酮。