The preparation and TMSOTf-mediated catalytic carbocupration–silylation of allylic propiolates has been investigated, expanding on previous syntheses of a variety of β-alkyl- and β-aryl-substituted vinylsilanes from an ethyl propiolate precursor. With few exceptions, the series of synthesized O-allyl (E)-vinylsilanes has been isolated in high yields (61–89%) with exceptional diastereoselectivities
研究了烯丙基
丙炔酸酯的制备和 TMSOTf 介导的催化碳
铜化-
硅烷化反应,扩展了之前从
丙炔酸乙酯前体合成各种 β-烷基和 β-芳基取代的
乙烯基硅烷的方法。除少数例外,一系列合成的O-烯丙基 ( E )-
乙烯基硅烷已以高收率 (61–89%) 分离,并具有优异的非对映选择性 ( E / Z >20:1)。此外,我们还展示了代表性烯
丙酯的新型
LDA 引发、TMSCl 介导的爱尔兰-克莱森重排。