Sodium Carbonate → 1,1-dimethylethyl 5-(4-amino-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-3-yl)-2,3-dihydro-1H-indole-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a 25 mL pressure tube was charged 3-bromo-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine (670 mg, 2.94 mmol), 1,1-dimethylethyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-indole-1-carboxylate (1014 mg, 2.94 mmol), 1,1′-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (120 mg, 0.147 mmol), and sodium carbonate (494 mg, 5.88 mmol) followed by dioxane (8 mL), and water (2 mL). The reaction was heated at 120° C. for 40 minutes in a microwave reactor. LCMS showed no more SM. The reaction was cooled to room temperature, the mixture was transferred into a 100 mL Erlenmeyer flask, rinsed by EtOAc, with the water layer and black greasy solid stayed in tube (total 50 mL of EtOAc was added to the mixture). White solid was formed in brown solution. The solid was filtered to give titled product (764 mg).

Provenance & Evidence