The reaction of imines which contain N-heterocycles or an ester group with alkenes or alkynes and carbon monoxide in the presence of a catalytic amount of a ruthenium carbonyl results in [2 + 2 + 1] cyclocoupling to give γ-butyrolactams in good yields.
含有N-杂环或酯基的
亚胺与烯烃或
炔烃及
一氧化碳在催化量的
钌羰基存在下反应,导致[2 + 2 + 1]环偶联,生成
γ-丁内酯,产率良好。