Cesium carbonate → HCID 68801871, compound

Participants

Reaction Steps

A mixture containing 0.2 g (0.71 mmol) of (1S)-2-(2,5-diaza-bicyclo[2.2.1]hept-2-yl)-3-methyl-6-pyridin-4-yl-3H-pyrimidin-4-one, 3.335 g (2.12 mmol) of 3-bromopyridine, 0.322 g (0.99 mmol) of cesium carbonate, 18 mg (0.028 mmol) of (+/−)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl and 6 mg (0.028 mmol) of palladium(II) acetate in 100 ml of anhydrous tetrahydrofuran under argon atmosphere is stirred under reflux for 18 h. The mixture is filtered. Water is added to the filtrate and the resulting solution extracted with chloroform. The combined extracts are washed with saturated aqueous ammonium chloride and evaporated. The crude product is purified by chromatography on silica gel eluting with a mixture of dichloromethane/methanol in the proportions 100/0 to 95/5 to give 119 mg of pure compound as a solid.

Provenance & Evidence