2-(Bis-methylsulfanyl-methylene)- → Ethyl 1-(4-methylphenyl)-4-(methylthio)-2-[4-(methylthio)phenyl]-6-oxo-1,6-dihydropyrimidine-5-carboxylate

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Reaction Conditions

Reaction Steps

A mixture of diethyl [bis(methylthio)methylene]malonate (2.64 g, 10 mmol) and N-(4-methylphenyl)-4-(methylthio)benzenecarboximidamide (2.6 g, 10 mmol) (prepared according to the procedure described in preparation 6) was heated at 110-120° C. for 2 hours. The gummy mass thus obtained was purified by column chromatography to give the title compound (0.86 g, yield 20.2%, mp 153-155° C., purity 99.81% by HPLC). 1H-NMR (CDCl3):δ 1.36-1.39 (t, 3H), 2.33 (s, 3H), 2.44 (s, 3H), 2.55 (s, 3H), 4.37-4.42 (q, 2H), 7.0-7.05 (m, 4H), 7.13-7.15 (d, 2H), 7.25-7.27 (d, 2H). IR (KBr) cm−1: 2981, 2924, 1693 (—C═O). MS m/z:427.1(M+)

Provenance & Evidence