Lewis acid catalysed M-ene, H-ene, and cycloaddition reactions of allylic stannanes and silanes with methyl propiolate
作者:Hai-Shan Dang、Alwyn G. Davies
DOI:10.1016/s0022-328x(97)00246-5
日期:1998.2
products of the reaction of methyl propiolate with cyclohexene and some allyl and cyclohex-2-enyl silanes and stannanes (H-ene and M-ene adducts, and [2+2] and [3+2] cycloadducts) have been determined, and rationlised in terms of the probable reaction mechanism. The allylstannanes show only the M-ene reactions to give a mixture of the E- and Z-adducts, and it has been confirmed that the reaction of allylsilanes
确定了丙酸甲酯与环己烯以及一些烯丙基和环己-2-烯基硅烷和锡烷(H-烯和M-烯加合物,以及[2 + 2]和[3 + 2]环加合物)反应的产物,并根据可能的反应机理进行了定量分析。烯丙基锡烷仅显示M-烯反应以生成E-和Z-加合物的混合物,并且已证实烯丙基硅烷的反应既可以生成[2 + 2](环丁烯),也可以生成[3 + 2]。 (环戊烯)环加合物,这已经引起了一些争议。