E-PhCHCHMR3 (M Si, Ge, Sn, Pb) were allowed to react with a series of heteroatom-centered radicals (PhY ·, Y = S, Se, Te, derived from PhYYPh) and carbon-centered radicals ((CH3)2CH · derived from (CH3)2CHHgCl). We report that alkenylplumbanes and, under forcing conditions, alkenylgermanes undergo SH2 or SH2′ substitution of the metal by chain mechanism analogous to those previously reported for alkenylstannanes
类型CH的化合物2 CHCH 2 MR 3和ë -PhCHCHMR 3(M
硅,
锗,
锡,
铅)被允许与一系列杂原子中心自由基(PHY·,Y = S,
硒的反应,Te(源自PhYYPh)和碳中心自由基((CH 3)2 CH·源自(CH 3)2 CHHgCl)。我们报告说,烯基
铅烷和在强迫条件下,烯基
锗烷通过类似于先前针对烯基
锡烷所报道的链机理经历了
金属的S H 2或S H 2'取代。烯基
硅烷是不反应的。