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 (Example 1) were taken up in 200 ml of methanol, and 4.5 g of sodium borohydride were added in portions, whilst stirring and cooling. When the reaction had ended, the reaction mixture was adjusted to pH 6 and concentrated. The residue was taken up in 200 ml of methylene chloride, the methylene chloride mixture was washed with saturated sodium bicarbonate solution, dried over sodium sulphate and filtered and the filtrate was concentrated. The residue was recrystallised 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