Stable organozinc compounds derived from alkyl-3-alkyl-2-(bromomethyl)-proenoates have been prepared. NMR 13C, 1H and IR stidies show only one Z stereoisomer (no methylenic form) with a strong chelation between zinc and the carbonyl oxygen of the ester and solvated by only one solvent molecule. Hydrolysis can be achieved by two concurrent mechanisms with or without transposition.
已经制备了衍生自烷基-3-烷基-2-(
溴甲基)-烯酸酯的稳定的
有机锌化合物。NMR 13 C,1 H和IR激发显示仅一种Z立体异构体(无亚甲基形式),在
锌和酯的羰基氧之间具有很强的螯合性,仅被一个溶剂分子溶剂化。
水解可以通过两种同时发生或不发生转座的机制来实现。