Dichloromethane → 4-(2-Chloro-4-(cyclopentyloxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-N-methylbenzamide

Participants

Reaction Conditions

Reaction Steps

2-Chloro-4-(cyclopentyloxy)-5-iodo-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine (1 equiv) and (4-(methylcarbamoyl)phenyl)boronic acid (1.3 equiv) were combined in 1,4-dioxane (0.3 M). Sodium carbonate (3 equiv), dissolved in water (3.6 M), was added to the reaction mixture, followed by addition of [1,1′-bis(diphenylphosphino)ferrocene]-dichloropalladium(II), complex with dichloromethane (0.1 equiv). Nitrogen gas was bubbled through the reaction mixture for 2 min then reaction was heated at 90° C. for 3 h. The solvent was removed under reduced pressure and the product was purified by silica gel chromatography (Biotage, 0-80% ethyl acetate in hexanes over 2.2 L). The fractions containing the desired product were combined and evaporated under reduced pressure to give the title compound (62.5% yield) as an orange solid. MS (ESI) m/z 501.4 [M+1]+.

Provenance & Evidence