1,4-Dioxane → 6-(2-chloro-4-(1-methylcyclobutoxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-2-methylbenzo[d]oxazole

Participants

Reaction Conditions

Reaction Steps

To a degassed mixture of 2-chloro-5-iodo-4-(1-methylcyclobutoxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine (1 equiv), 2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]oxazole (1.1 equiv) and tripotassium phosphate trihydrorate (3.0 equiv) in a 9:1 mixture of 1,4-dioxane and water (0.45 M) was added palladium 1,1-bis(diphenylphosphion)-ferrocene dicholoride (0.1 equiv). The reaction mixture was stirred at 70° C. for 2 h. The reaction mixture was cooled to room temperature and concentrated. The residue was purified by silica gel chromatography (0-25% ethyl acetate in petroleum ether) to afford the title compound (49% yield) as a yellow solid. MS (ESI) m/z 499.2 [M+H]+.

Provenance & Evidence