p-Toluenesulfonic acid monohydrate → 2-[2-Chloro-6-(4-chloro-benzyl)-pyrimidin-4-yl]-propan-2-ol

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Reaction Steps

A solution of 2-chloro-4-(4-chloro-benzyl)-6-(1-methyl-1-trimethylsilanyloxy-ethyl)-pyrimidine (3.69 g, 10.0 mmol) and toluene-4-sulfonic acid monohydrate (0.19 g, 1.0 mmol) in 90% aqueous tetrahydrofuran (40 mL) was stirred at 20° C. for 2 h. The solution was diluted with ethyl acetate and washed successively with saturated sodium hydrogencarbonate solution and with brine. The organic layer was dried over sodium sulfate and evaporated under reduced pressure. The residual oil was crystallized from cyclohexane to give the title compound (2.28 g, 77%) as a white solid.

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