transformation involves an olefin cross-metathesis followed by an intramolecular organocatalytic Michael-induced spirocyclization. Under microwave irradiation, the Hoveyda–Grubbs precatalyst can be iteratively used as the source of both the metathesis ruthenium-based catalyst, and the spirocyclization N-heterocyclic carbene catalyst.
描述了生态兼容的α-
螺内酯和α-螺内酰胺的多样性导向合成。整体转化涉及烯烃的交叉复分解,然后是分子内有机催化迈克尔诱导的螺环化。在微波辐射下,Hoveyda-Grubbs预催化剂可迭代用作复分解
钌基催化剂和螺环化N-杂环卡宾催化剂的来源。