Water → (R)-5-Bromo-3-(((tert-butyldimethylsilyl)oxy)methyl)-3,4-dihydroisoquinoline

Participants

Reaction Steps

Dissolve (3R)-5-bromo-3-({[tert-butyl(dimethyl)silyl]oxy}methyl)-1,2,3,4-tetrahydroisoquinoline (4.2 g, 11.8 mmol) in diethyl ether (118 mL). Add N-chlorosuccinimide (2.36 g, 17.7 mmol). Stir 30 min at room temperature and concentrate under reduced pressure. Dissolve the residue in potassium hydroxide (42.0 mL, 30.3 mmol, 5% in MeOH) and stir for 30 min at room temperature. Pour into water and extract with dichloromethane. Dry the dichloromethane extracts over sodium sulfate, filter, and concentrate under reduced pressure. Purify the residue by silica gel chromatography eluting with ethyl acetate: hexanes (5-100% gradient) to give the title compound (3.40 g, 9.59 mmol). MS (m/z): 354 (M+1).

Provenance & Evidence