Indirect electroreductive cyclization of η-bromo-α, β-unsaturated esters 1-6 using Co(III) or Ni(II)complex as an electron-transfer catalyst provided the six membered compounds 7-12, which are useful synthetic intermediates of several indole and ipecac alkaloids.
使用 Co(III)或 Ni(II)络合物作为电子转移催化剂,对 η-
溴-α,β-不饱和酯 1-6 进行间接电还原环化,得到了六位化合物 7-12,它们是几种
吲哚和开
环十四烷生物碱的有用合成中间体。