1,4- or 1,5-migration of a double bond of dehydroalanines under palladium catalysis is reported. The process occurred with several highly-substituted dehydroalanines under mild typical Heck reaction conditions. Although this was one of the first reports of a palladium-catalyzed 1,5-olefin migration, the outcome of the reaction was susceptible to the starting material. Mechanistically, the process involved
报道了在
钯催化下脱氢丙
氨酸双键的1,4-或1,5-迁移。该过程是在温和的典型Heck反应条件下用几种高度取代的脱氢丙
氨酸发生的。尽管这是
钯催化1,5-烯烃迁移的最早报道之一,但反应的结果易受起始原料的影响。从机理上讲,该过程涉及五(1,4-迁移)或六元环(1,5-迁移)
有机钯中间体,该中间体在β-
氨基消除过程中裂解了C–N键。