We report the preparation of substituted indanes and their dimeric isomers via the samarium triflatemediated [Sm(OTf)3, 10 mol%] self-dimerization of vinylarenes in MeNO2 at 25 oC for 10 h. The diverse products were obtained in moderate to high yields. The synthesis involves a (3+2) annulation via the formation of carbon-carbon bonds. Plausible mechanisms are proposed and discussed. The investigation
我们报告了通过
三氟甲磺酸钐介导的 [Sm(OTf)3, 10 mol%]
乙烯基芳烃在 MeNO2 中在 25 oC 下自二聚 10 小时制备取代
茚满及其二聚异构体。以中等至高产率获得了不同的产品。该合成涉及通过形成碳-碳键的 (3+2) 环化。提出并讨论了合理的机制。对各种稀有
金属
三氟甲磺酸盐催化剂负载量、反应条件和底物范围的研究导致了操作简单的一锅 Friedel-Crafts 反应方案。