Potassium Carbonate → 3-Methyl-2-phenylquinoline

Participants

Reaction Steps

2-Chloro-3-methylquinoline (5.43 g, 30.6 mmol), phenylboronic acid (4.47 g, 36.7 mmol), Pd(II) acetate (0.17 g, 0.76 mmol), and triphenylphosphine (0.80 g, 3.06 mmol) were dissolved in 100 mL DME. To the stirred solution was added K2CO3 (11.4 g dissolved into 41 mL H2O). The entire mixture was allowed to stir at reflux for 18 hours under N2 atmosphere. The cooled mixture was then removed of water, enriched with 150 mL of ethyl acetate, extracted three times from brine, dried over anhydrous sodium sulfate, filtered and evaporated of solvent. The crude liquid was then purified on a silica gel column using 20% ethyl acetate/hexanes. The purest fractions were combined to give 2-phenyl-3-methylquinoline (6.42 g, 95.8% yield).

Provenance & Evidence