Sodium borohydride → HCID 118114009, compound

Participants

Reaction Steps

To a stirred 0° C. solution of 3-methoxy-6,7-dihydroisoquinolin-8(5H)-one (1.90 g, 10.72 mmol) in methanol (30 mL) was added sodium borohydride (1.10 g, 29.08 mmol) in small portions. The resulting mixture was allowed to warm to room temperature. After 2 h, the mixture was quenched with water (20 mL) and was extracted with ethyl acetate (3×100 mL). The combined organic phases were dried over sodium sulfate, filtered, and concentrated. Chromatographic purification of the residue (silica gel, 50% ethyl acetate in petroleum ether elute) afforded 1.60 g (85%) of 3-methoxy-5,6,7,8-tetrahydroisoquinolin-8-ol as a light yellow solid.

Provenance & Evidence