Palladium-catalyzed coupling of vinyl triflates with organostannanes. Synthetic and mechanistic studies
作者:William J. Scott、J. K. Stille
DOI:10.1021/ja00271a037
日期:1986.5
The palladium-catalyzed coupling reaction of vinyl triflates with acetylenic, vinyl, allyl, and alkyl tin reagents in the presence of lithium chloride or another suitable salt takes place in high yields under mild reaction conditions; however, benzyl and phenyl tin reagents give poor yield of coupled product. The utilization of a tin or silicon hydride reagent in place of the organotin partner yields
在氯化锂或其他合适的盐的存在下,在温和的反应条件下,钯催化的乙烯基三氟甲磺酸酯与炔属、乙烯基、烯丙基和烷基锡试剂的偶联反应以高产率发生;然而,苄基和苯基锡试剂的偶联产物产率很低。使用锡或氢化硅试剂代替有机锡配对物通过三氟甲磺酸酯基团的还原裂解产生烯烃。乙烯基三氟甲磺酸酯与六甲基二锡的钯催化反应以高产率得到乙烯基锡烷。区域选择性形成的乙烯基三氟甲磺酸酯可用于生产 1,3-二烯作为区域异构偶联产物。