The well-known "first generation" Grubbs metathesis complex is capable of catalyzing the intramolecular [3 + 2] cycloaddition of alk-5-ynylidenecyclopropanes. It appears that the species responsible for the catalysis is a ruthenium complex generated in situ from the Grubbs carbene in the presence of the substrate.
众所周知的“第一代”Grubbs 复分解复合物能够催化 alk-5-ynylidenecyclopropanes 的分子内 [3 + 2] 环加成。似乎负责催化的物质是在底物存在下从格鲁布斯卡宾原位生成的
钌络合物。