(2-Methylpropyl)boronic acid → HCID 71236339, compound

Participants

Reaction Steps

5-Bromo-2-(dibenzo[b,d]furan-4-yl)-4-methylpyridine (13.0 g, 38.3 mmol), isobutylboronic acid (11.7 g, 115 mmol), dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine (0.63 g, 1.53 mmol) and potassium phosphate monohydrate (22.1 g, 96 mmol) were mixed in water (10 mL) and toluene (210 mL). The system was degassed for 20 min. with nitrogen and Pd2(dba)3 (0.35 g, 0.38 mmol) was then added and the system was refluxed overnight. After cooling to room temperature, the reaction mixture was filtered through a small plug of silica gel and eluted with dicloromethane. The filtrated was concentrated and then crystallized from hexane to give 2-(dibenzo[b,d]furan-4-yl)-5-isobutyl-4-methylpyridine (9.0 g, 74%).

Provenance & Evidence