Sodium Hydroxide → 4-(2-chlorophenyl)-2-[5-(trifluoromethyl)-2H-tetrazol-2-yl]methylpyrimidine-5-carboxylic acid

Participants

Reaction Steps

An amount of 1.74 g (4.21 mmol) of ethyl 4-(2-chlorophenyl)-2-{[5-(trifluoromethyl)-2H-tetrazol-2-yl]methyl}pyrimidine-5-carboxylate was dissolved in 12 ml of ethanol and the solution was admixed dropwise at 0° C. with 45% strength aqueous sodium hydroxide solution (5.05 mmol). The reaction was stirred for a further hour and warmed to RT. The ethanol was then removed under reduced pressure and the residue was admixed with ice-water (10 ml). The aqueous phase was extracted with ethyl acetate. The organic phase was discarded. Then the aqueous phase was adjusted to a pH of 3 using hydrochloric acid, and again extracted with ethyl acetate (3×20 ml). The combined organic phases were dried over sodium sulphate.

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