Sodium borohydride → 1-Cyclohexyl-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-pent-1-en-3-ol

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Reaction Steps

26 g (0.1 mol) of 1-cyclohexyl-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-pent-1-en-3-one (prepared as described in Example II-1) were taken up in 200 methanol, and 4.5 g of sodium borohydride were added in portions to the solution, while stirring and cooling. After the reaction had ended, the reaction mixture was adjusted to pH 6 and was concentrated. The residue was taken up in 200 ml of methylene chloride, and the solution was washed with saturated sodium bicarbonate solution, dried over sodium sulphate, filtered and concentrated. The residue was recrystallized from petroleum ether. 14.5 g (55% of theory) of 1-cyclohexyl-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-pent-1-en-3-ol of melting point 131° C. were obtained.

Provenance & Evidence