Hydrogen Peroxide → 4-(6,6-Dimethyl-4-oxo-3-methyl-4,5,6,7-tetrahydroindazol-1-yl)-2-(3,4,5-trimethoxyanilino)-benzamide

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Reaction Steps

To a mixture of 4-(6,6-dimethyl-4-oxo-3-methyl-4,5,6,7-tetrahydro-indazol-1-yl)-2-(3,4,5-trimethoxyanilino)-benzonitrile (1.56 g, 3.39 mmol, 1.0 eq.) in 17 mL of a mixture of 4:1 ethanol-dimethyl sulfoxide was added 2 mL of 1 M aqueous sodium hydroxide and 2 mL of 30% hydrogen peroxide. After 3 hours the reaction mixture was diluted with water and extracted with ethyl acetate (3×). The combined organic layers were washed with brine, dried over sodium sulfate, filtered, and concentrated in vacuo to afford the title compound, 4-(6,6-dimethyl-4-oxo-3-methyl-4,5,6,7-tetrahydro-indazol-1-yl)-2-(3,4,5-trimethoxyanilino)-benzamide, (1.61 g, 99%) as a tan solid: LC/MS (m/z): [M+H]+ 479.3.

Provenance & Evidence