Cesium carbonate → Tert-butyl 1'-[2-(trifluoromethyl)pyrimidin-4-yl]-4,4'-bipiperidine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

The tert-butyl 4,4′-bipiperidine-1-carboxylate (28.5 mg, 0.11 mmol) and cesium carbonate (106 mg, 0.32 mmol) were stirred in NMP (0.5 ml) and the 4-bromo-2-(trifluoromethyl)pyrimidine (12 mg, 0.053 mmol) was added. The mixture was heated at 70° C. for 2 h. The reaction was cooled down to r.t. and diluted with ethyl acetate (5 mL) and was washed with water 2 mL (×1) and brine 2 mL (×1). The organic phase was dried over magnesium sulfate, filtered, and concentrated on rotavapor. The crude material was purified by preparative TLC with 30% acetone: hexane to yield the titled compound.

Provenance & Evidence