The intra- and intermolecular couplings of enones with alkynes or enones in the presence of organozincs under Ni(COD)2 catalysis resulted in three general reaction pathways: direct conjugate addition, cyclization with alkylation, and cyclization with reduction. The effects of substrate structural variations on selectivities among these three pathways were investigated.
在Ni(COD)2催化下,烯酮与
炔烃或烯酮在
有机锌存在下的分子内和分子间偶联导致三种一般反应途径:直接共轭加成,烷基化环化和还原环化。研究了底物结构变化对这三种途径之间选择性的影响。