Oxidative free radical reactions between 2-amino-1,4-benzoquinones and carbonyl compounds
作者:Che-Ping Chuang、An.-I. Tsai
DOI:10.1016/j.tet.2007.09.019
日期:2007.11
The manganese(III) initiated oxidative free radical reactions of 2-amino-1,4-benzoquinone are described. The free radical reaction of 5,6-dimethyl-2-methylamino-1,4-benzoquinone (1) provides a novel method for the synthesis of indole-4,7-dione and indole-2,4,7-trione. High chemoselectivity was observed in different solvents. The regioselectivity of this reaction was also studied with 5-methyl-2-methylamino-1