Lithium hydroxide, monohydrate → 2-methyl-4-(1-methyl-1H-indol-5-yl)pyrimidine-5-carboxylic acid

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Reaction Steps

In a mix of ethanol:water:dioxane (1:1:1, 9 mL) was placed ethyl 2-methyl-4-(1-methyl-1 H-indol-5-yl)pyrimidine-5-carboxylate (391 mg, 1.324 mmol) and lithium hydroxide hydrate (222 mg, 5.30 mmol). The mix stirred at RT overnight. The mix was diluted with ethyl acetate (25 mL) and 5% citric acid (20 mL). The organic phase was separated, washed with brine (20 mL) and dried over sodium sulfate. The solvent was evaporated at reduced pressure to give 2-methyl-4-(1-methyl-1 H-indol-5-yl)pyrimidine-5-carboxylic acid as a tan solid (132 mg, 37% yield). MS (ESI) m/z: 268.0 (M+H+).

Provenance & Evidence