Water → 1-Acetyl-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 solution of 6-(3,4-dimethoxyphenyl)-3-methyl-1,2,3,4-tetrahydro-4-(2,4,6-trimethylphenylimino)pyrimidine (0.5 g) in pyridine (5 ml) was added acetic anhydride (1.0 ml), and the mixture was stirred at ambient temperature for 2.5 hours. The mixture was poured into water (150 ml) and extracted with chloroform. The organic layer was washed with brine, dried over sodium sulfate, and evaporated. The residue was chromatographed on silica gel eluting with chloroform to give 1-acetyl-6-(3,4-dimethoxyphenyl)-3-methyl-1,2,3,4-tetrahydro-4-(2,4,6-trimethylphenylimino)pyrimidine (0.22 g).

Provenance & Evidence