Solvent effects on the oxidative free radical reactions of 2-amino-1,4-naphthoquinones
作者:Chao-Ming Tseng、Yi-Lung Wu、Che-Ping Chuang
DOI:10.1016/j.tet.2004.10.029
日期:2004.12
Solvent effects on the manganese (III) initiatedoxidativefreeradicalreactions of 2-amino-1,4-naphthoquinones are described. This freeradicalreaction provides a novel method for the synthesis of benzo[f]indole-4,9-diones, benzo[f]indole-2,4,9-triones, benzo[b]carbazole-6,11-diones and benzo[b]acridine-6,11-diones. High chemoselectivity was observed in different solvents.
描述了溶剂对2-氨基-1,4-萘醌的锰(III)引发的氧化自由基反应的影响。该自由基反应为合成苯并[ f ]吲哚-4,9-二酮,苯并[ f ]吲哚-2,4,9-三酮,苯并[ b ]咔唑-6,11-二酮和苯并[ b ] ac啶-6,11-二酮。在不同溶剂中观察到高化学选择性。
Cerium salts in the oxidative free radical reactions between 2-amino-1,4-naphthoquinones and β-dicarbonyl compounds
作者:Chih-Chung Tseng、Yi-Lung Wu、Che-Ping Chuang
DOI:10.1016/s0040-4020(02)00864-5
日期:2002.9
The oxidative free radical reactionsbetween 2-amino-1,4-naphthoquinones and β-dicarbonyl compounds mediated by cerium(IV) salts are described. In contrast to those mediated by manganese(III) acetate, the cerium(IV) mediated free radical reaction provides a novel method for the synthesis of benzo[f]indole-4,9-diones exclusively. This high selectivity is due to the strong oxaphilicity of the cerium
描述了由铈(IV)盐介导的2-氨基-1,4-萘醌与β-二羰基化合物之间的氧化自由基反应。与乙酸锰(III)介导的那些相反,铈(IV)介导的自由基反应提供了一种专门合成苯并[ f ]吲哚-4,9-二酮的新方法。这种高的选择性归因于铈盐的强氧亲和性。
Synthesis of Benzo[<i>f</i>]indole-4,9-dione and Benzo[<i>b</i>]carbazole-6,11-dione Derivatives via One-Pot Sequential C,N-Dialkylation of Enaminones of β-Diketones and Ketoesters by 2,3-Dichloronaphthoquinone
作者:Jian-Hua Xu、Hua-You Hu、Yun Liu、Miao Ye
DOI:10.1055/s-2006-948171
日期:2006.8
Direct one-pot syntheses of benzo[f]indole-4,9-dione and benzo[b]carbazole-6,11-dione derivatives have been achieved in moderate to high yields via sequential C,N-dialkylation of the monoenamines of β-dicarbonyl compounds (the β-enaminones) by 2,3-dichloronaphthoquinone