Benzyl Chloride → 4-Benzyloxy-3-chloroaniline

Participants

Reaction Steps

To 4-amino-2-chlorophenol (7.23 g, 50 mmol) dissolved in acetone (250 mL), was added potassium carbonate (6.94 g, 50 mmol), followed by the addition of benzyl chloride (5.8 mL, 50 mmol), tetrabutylammonium bromide (TBAB) (1.66 g, 5 mmol), and potassium hydroxide (2.84 g, 50 mmol). The reaction mixture was allowed to stir at reflux overnight under nitrogen. The reaction mixture was extracted three times using dichloromethane; the combined organic layers were washed with brine and dried over potassium carbonate. The sample was concentrated and the resulting oil was dried overnight under vacuum. The material was purified by silica gel flash column chromatography eluting with 50:50 v:v hexanes:ethyl acetate and the collected fractions were concentrated in vacuo to give E1 (9.3 g, 80%); mp 54° C.; HPLC: Inertsil ODS 3V C18, 40:30:30 [KH2PO4 (0.01 M, pH 3.2): CH3OH:CH3CN], 264 nm, Rt 14.8 min, 98.7% purity; MS (TOF ES+) m/z 234 (M+H, 100).

Provenance & Evidence