Et3B induced addition of Ph3SnH to suitably constituted enynes provides (triphenylstannylmethylene) oxolanes stereoselectively in one pot. Destannylation followed by oxidation affords α-methylene-γ-butyrolactones in fair yields.
Et3B 诱导将 Ph3SnH 添加到适当构成的烯炔中,在一锅中立体选择性地提供(三苯基甲
锡亚甲基)氧杂戊环。去
甲烷基化然后氧化以公平的产率提供α-亚甲基-
γ-丁内酯。