Preliminary Studies on the Michael Addition of Quinones to Nitroolefins: (6b<i>R</i>,10a<i>S</i>)-7,8,9,10,10a,11-Hexahydro-6b<i>H</i>-benzo[<i>a</i>]carbazole-5,6-diones, (4a<i>R</i>,11b<i>S</i>)-1,2,3,4,4a,5-Hexahydro-11b<i>H</i>-benzo[<i>b</i>]carbazole-6,11-diones, and 1,2,3,4-Tetrahydro-5<i>H</i>-benzo[<i>b</i>]carbazole-6,11-diones
作者:Ramón Estévez、José Barcia、José Otero、Juan Estévez
DOI:10.1055/s-2007-980356
日期:2007.6
We describe herein preliminary results on the novel Michael addition of naphthoquinones to nitroolefins and its application to the first synthesis of the novel (6bR,10aS)-7,8,9,10,10a,11-hexahydro-6bH-benzo[a]carbazole-5,6-diones and (4aR,11bS)-1,2,3,4,4a,5-hexahydro-11bH-benzo[b]carbazole-6,11-diones, together with a novel synthesis of 1,2,3,4-tetrahydro-5H-benzo[b]carbazole-6,11-diones.
本文描述了萘醌与硝基烯烃的新型Michael加成反应的初步结果,并将其应用于新型(6bR,10aS)-7,8,9,10,10a,11-六氢-6bH-苯并[a]咔唑-5,6-二酮和(4aR,11bS)-1,2,3,4,4a,5-六氢-11bH-苯并[b]咔唑-6,11-二酮的首个合成中,同时还介绍了一种全新的1,2,3,4-四氢-5H-苯并[b]咔唑-6,11-二酮的合成方法。