Hydrazine hydrate (1:1) → 4-Hydrazino-5,6-diphenyl-2-(trifluoromethyl)pyrimidine

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Reaction Steps

4-Chloro-5,6-diphenyl-2-(trifluoromethyl)pyrimidine (1.8 g, 5.3 mmol) (synthesized according to the procedure described in example 1) was stirred in ethanol (10 ml) containing hydrazine hydrate (0.64 g, 12.8 mmol) for 2 hours at 35° C. The crystals thus obtained in the reaction mixture was filtered under vacuum, washed with ethanol (5 ml) and dried to yield the title compound (1.7 g, 95.7%, HPLC purity 99.2%), mp: 182-186° C.

Provenance & Evidence