1,4-Dioxane → tert-butyl 4-((6-(methylamino)-3-p-tolyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)methyl)cyclohexylcarbamate

Participants

Reaction Conditions

Reaction Steps

A 30 mL microwave tube was charged with tert-butyl 4-((3-bromo-6-(methylamino)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)methyl)cyclohexylcarbamate (0.070 g, 0.16 mmol), p-tolylboronic acid (0.065 g, 0.48 mmol), potassium phosphonate (0.10 g, 0.48 mmol), tetrakis(triphenylphosphine)palladium (0.018 g, 0.016 mmol), dioxane (2 mL) and water (0.5 mL). After stirring for 5 min, the reaction was heat at 150° C. for 10 min in microwave. The reaction was diluted with EtOAc and washed with water. The aqueous layer was extracted with EtOAc (3×). The combined organic layers were dried (Na2SO4), concentrated, and purified by Isco to provide tert-butyl 4-((6-(methylamino)-3-p-tolyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)methyl)cyclohexylcarbamate (0.064 g, 89%) as a white solid.

Provenance & Evidence