Stereospecific Cross-Coupling of α-(Thiocarbamoyl)organostannanes with Alkenyl, Aryl, and Heteroaryl Iodides
作者:J. R. Falck、Paresh K. Patel、Anish Bandyopadhyay
DOI:10.1021/ja064948q
日期:2007.1.1
PTC-protected alpha-hydroxystannanes cross-couple with alkenyl/aryl/heteroaryl iodides in moderate to good yields using copper(I) thiophene-2-carboxylate (CuTC) in THF at or below room temperature. Simple aryl iodides and 1-iodocyclohexene, two classes of electrophiles that typically react sluggishly, are also good substrates. Cross-couplings proceed with retention of configuration at the alkenyl-
在室温或低于室温下,使用 THF 中的噻吩-2-羧酸铜 (CuTC),外消旋和缩放 PTC 保护的 α-羟基锡烷与烯基/芳基/杂芳基碘化物以中等至良好的产率交叉偶联。简单的芳基碘化物和 1-碘代环己烯是两类通常反应缓慢的亲电子试剂,也是很好的底物。交叉偶联继续保持在烯基和甲锡烷基取代的立体中心的构型。