Autoxidation of 3,3′-dimethyl-2,2′-bi-indolyl
Abstract
The product obtained during dehydrogenation of 3-methyl-2-(3-methylindolin-2-yl)indole (1) with chloranil is shown to be 3-methyl-2-(3-methylindol-2-yl)-3H-indol-3-ol (4), which is produced via 3-hydroperoxy-3-methyl-2-(3-methylindol-2-yl)-3H-indole (3). The hydroperoxide results from the autoxidation of 3,3′-dimethyl-2,2′-bi-indolyl (2). Further autoxidation of the bi-indolyl (2) producesNN′-bis-(2-acetylphenyl)oxamide (10).