反应详情

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.

1. customThe ethanol was then removed under reduced pressure
2. extractionThe aqueous phase was extracted with ethyl acetate
3. extractionagain extracted with ethyl acetate (3×20 ml)
4. dry with materialThe combined organic phases were dried over sodium sulphate