Highly chemoselective coupling of allenylstannanes with organic iodides promoted by Pd(PPh3)4/LiCl: an efficient method for the synthesis of substituted allenes
作者:Chih-Wei Huang、Muthian Shanmugasundaram、Hao-Ming Chang、Chien-Hong Cheng
DOI:10.1016/s0040-4020(03)00516-7
日期:2003.5
preparation of various monosubstituted arylallenes, disubstituted allenes and alkenylallenes via palladium-catalyzed coupling of allenylstannanes with aryl iodides or alkenyl iodides is described. The coupling reaction was carried out in the presence of Pd(PPh3)4 and LiCl using DMF as solvent. The possible role of LiCl in this coupling process is discussed based on the 119Sn NMR studies.
描述了一种通过钯催化的烯丙基锡烷与芳基碘化物或烯基碘化物的偶联反应来制备各种单取代的芳基烯丙基,二取代的烯丙基和烯基烯丙基的有效方法。偶联反应是在Pd(PPh 3)4和LiCl的存在下,以DMF为溶剂进行的。基于119 Sn NMR研究,讨论了LiCl在该偶联过程中的可能作用。