Sodium borohydride → 6-(3,4-Dimethoxyphenyl)-3-methyl-1,2,3,4-tetrahydro-4-(2,4,6-trimethylphenylimino)pyrimidine

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Reaction Steps

To a suspension of 3,4-dihydro-6-(3,4-dimethoxyphenyl)-3-methyl-4-(2,4,6-trimethylphenylimino)pyrimidine (2.0 g) in a mixture of ethanol (10 ml) and water (10 ml) was added sodium borohydride (1.04 g), and the mixture was stirred under reflux for 1.5 hours. After removal of the organic solvent, the mixture was suspended in water, and extracted with ethyl acetate. The organic layer was dried over magnesium sulfate, evaporated, and triturated in ethanol, to give 6-(3,4-dimethoxyphenyl)-3-methyl-1,2,3,4-tetrahydro-4-(2,4,6-trimethylphenylimino)pyrimidine (1.18 g).

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