hydrostannylation of ethyl 4,4,4‐trifluorobutynoate 1 with tributyltin hydride at room temperature is highly regio‐ and stereoselective, providing good yields of β‐trifluoromethyl (Z)‐α‐ or (Z)‐β‐stannylacrylates 2. Vinylstannanes 2 undergo a copper(I)‐catalyzed coupling reactions with allylic or propargylic bromides leading selectively to good yields of the corresponding allylated or propargylated products
4,4,4-三氟丁酸乙酯1在室温下与氢化三
丁基锡的无
钯加氢
苯乙烯基化反应具有很高的区域选择性和立体选择性,可提供高产率的β-三
氟甲基(Z)-α-或(Z)-β-
锡烷基
丙烯酸酯2。
乙烯基stannanes 2与烯丙基或炔丙基
溴进行
铜(I)催化的偶联反应,从而选择性地获得相应的烯丙基或炔丙基化产物的良好收率,而无需烯丙基或烯丙基移位。