Boron tribromide → 7-Hydroxy-3,4-dihydrocarbostyril

Beteiligte Stoffe

Reaktionsschritte

A solution of 7-methoxy-3,4-dihydro-1H-quinolin-2-one (1.30 g, 7.34 mmol) in CH2Cl2 (100 mL) at 0° C. is treated with BBr3 (14.7 mL, 1.0 M in CH2Cl2) added dropwise. The mixture is stirred for 48 hours at room temperature and then quenched with water dropwise. The suspension is filtered and the solid is rinsed with MeOH (2 mL) and dried under vacuum to obtain the product (0.90 g, 75%).

Herkunft & Nachweise