Toluene → HCID 25260912, compound

Participants

Reaction Steps

isopropyl 4-(4-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-6-chloro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carboxylate (680 mg, 1.56 mmol) was dissolved in ethanol (8 mL) and toluene (8 mL) and divided over two microwave vials. To each vial was added 1.3 eq of aminophenylboronic acid, pinacol ester (220 mg, 1 mmol to each vial) and a 2M aqueous solution of Na2CO3 (1.57 mL, 3.14 mmol, 4 eq. to each vial). The vials were purged with nitrogen gas and 10 mol % tetrakis(triphenylphosphine)palladium was added (91 mg to each vial). Each vial was heated under microwave irradiation for 60 minutes. The contents of both vials were combined, diluted with dichloromethane and water and filtered over Celite. The organic phase was washed with brine (2×), dried over MgSO4 and concentrated to give the product as an orange foam, which was used without further purification. MS: 492.3 [M+H], RT 2.31

Provenance & Evidence