An Efficient Pyrrole Synthesis via Silaphenylmercuric Triflate Catalyzed Cyclization of Homopropargyl Azides
作者:Hirofumi Yamamoto、Ikuo Sasaki、Mizuho Mitsutake、Ayumi Karasudani、Hiroshi Imagawa、Mugio Nishizawa
DOI:10.1055/s-0031-1289566
日期:2011.12
phenylmercuric acetate and trifluoromethanesulfonic acid or silica gel supported phenylmercuric trifluoromethanesulfonate (silaphenyl mercuric triflate) efficiently catalyzed the formation of pyrroles from homopropargyl azide derivatives. The reactions proceed using 20 mol% of the heterogeneous catalyst with yields of isolated pyrroles ranging from 74% to 99%. cyclization - heterocycles - heterogeneous
乙酸苯汞和三氟甲磺酸的混合物或硅胶负载的三氟甲磺酸苯汞(三氟甲磺酸硅苯基汞)可有效催化由均丙基炔丙基叠氮化物衍生物形成吡咯。使用20mol%的非均相催化剂进行反应,分离的吡咯的产率为74%至99%。 环化-杂环-异相催化-叠氮化物-炔烃