O-Toluidine → 3-methoxy-N-(2-methylphenyl)benzamide

Beteiligte Stoffe

Reaktionsschritte

To a 500 mL 3-neck round bottom flask was added o-toluidine (4.50 g, 42.0 mmol) and 150 mL toluene. The solution was cooled in an ice bath under nitrogen. Trimethylaluminum (2.0 M in toluene, 29.4 ml, 58.8 mmol) was added dropwise via dropping funnel. The reaction mixture was stirred at room temperature for 2 hours under nitrogen. Next, 3-methoxybenzonitrile (7.27 g, 54.6 mmol) in 50 mL toluene was added and the reaction mixture was heated to 70° C. overnight under nitrogen. The reaction mixture was cooled in an ice bath and poured onto a stirring slurry of silica gel in 2:1 dichloromethane/methanol. The silica gel was filtered and washed with dichloromethane and methanol. The filtrate was evaporated leaving a solid. The solid was triturated with hexane, filtered, washed with hexane (6 g, 59%).

Herkunft & Nachweise