Manganese(III) Acetate Mediated Oxidative Free-Radical Reactions of 2-(Alkenylamino)-1,4-naphthoquinones with 1,3-Dicarbonyl Compounds
作者:Che-Ping Chuang、Yu-Lin Hsu
DOI:10.1055/s-0034-1379110
日期:——
synthesis of benzo[f]indole-4,9-diones and benzo[g]quinoline-5,10-diones. The reaction shows high chemoselectivity, depending on the solvents and 1,3-dicarbonyl compounds used. With both 1,3-diones and β-keto esters, in acetic acid, the condensation products, benzo[f]indoles, were generated selectively; in acetonitrile, the [5+1]-cyclization products, benzo[g]quinolines and tetrahydrobenzo[g]quinolines, were
摘要 描述了2-(烯基氨基)-1,4-萘醌的锰(III)介导的氧化自由基反应。2-(烯丙基氨基)-1,4-萘醌与1,3-二羰基化合物的自由基反应为合成苯并[ f ]吲哚-4,9-二酮和苯并[ g ]喹啉-提供了一种新方法。5,10-二酮。该反应显示出高的化学选择性,这取决于所使用的溶剂和1,3-二羰基化合物。用1,3-二酮和β-酮酸酯在乙酸中选择性生成缩合产物苯并[ f ]吲哚。乙腈中的[5 + 1]-环化产物苯并[ g ]喹啉和四氢苯并[ g喹啉以高化学选择性产生。用丙二酸二乙酯专门生产[5 + 1]-环化产物,即相应的四氢苯并[ g ]喹啉。2-(乙烯基氨基)-1,4-萘醌与1,3-二羰基化合物的自由基反应可有效产生苯并[ g ]喹啉。 描述了2-(烯基氨基)-1,4-萘醌的锰(III)介导的氧化自由基反应。2-(烯丙基氨基)-1,4-萘醌与1,3-二羰基化合物的自由基反应为合成苯并[