Dichloromethane → 7-Methyl-2-(6-trifluoromethyl-pyridin-3-yl)-3,7-dihydro-pyrrolo[2,3-d]pyrimidin-4-one

Participants

Reaction Conditions

Reaction Steps

A high pressure microwave reaction vial was charged with 2-chloro-7-methyl-3,7-dihydro-pyrrolo[2,3-d]pyrimidin-4-one (Intermediate A) (55 mg, 0.3 mmol), 6-(trifluoromethyl)pyridin-3-ylboronic acid (68.6 mg, 0.36 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) complex with dichloromethane (21.9 mg, 0.03 mmol), a 2M aqueous sodium carbonate solution (0.45 mL, 0.9 mmol), and ethanol (2 mL). The vessel was sealed, degassed and flushed with nitrogen three times. The reaction was then heated at 150° C. for 10 min in a Biotage microwave reactor. At this time, the resulting black mixture was concentrated in vacuo. The residue was treated with ethyl acetate (20 mL), stirred and filtered. The filtrate was concentrated in vacuo. Reverse phase chromatography (10-100% acetonitrile/water) and lyophilization afforded 7-methyl-2-(6-trifluoromethyl-pyridin-3-yl)-3,7-dihydro-pyrrolo[2,3-d]pyrimidin-4-one (6 mg, 6.81%) as a white solid. LC-MS calcd. for C13H10F3N4O [(M+H)+] 295, obsd. 294.8.

Provenance & Evidence