镍( II )催化的γ-烷基单取代的α,β-不饱和丁内酰胺与α,β-不饱和羰基化合物的不对称直接乙烯基Michael加成,以良好的收率和令人满意的对映选择性得到γ,γ-二烷基取代的丁内酰胺。基于该反应还开发了串联催化不对称插烯迈克尔加成/分子内迈克尔加成,这使得能够构建具有三个连续立体碳中心的对映体富集的八氢吲哚。
A catalyst-free, environmentally benign three-componentvinylogousMukaiyama–Mannichreaction of pyrrole-basedsilyldienolates is presented, which works effectively in both aqueous and solvent-free environments. Both lipophilic and hydrophilic aldehyde candidates are suitable substrates, allowing access to a rich repertoire of unsaturated vicinal aminolactam structures with virtually complete γ-site