Acetic Acid → HCID 25072816, compound

Participants

Reaction Steps

1-(Phenylsulfonyl)-3,4,5,6-tetrahydro-1H-azepino[5,4,3-cd]indol, Example 15 (34.4 mg, 0.11 mmol) was dissolved in DME (2 mL) and added formaldehyde (37% Wt. solution in water, 0.1 mL, 1.1 mmol), acetic acid (0.05 mL, 0.7 mmol) and sodium triacetoxyborohydride (156 mg, 0.7 mmol). The reaction mixture was stirred at room temperature for 24 H. The reaction was quenched by adding 1 M NaOH (5 mL). Aqueous phase (pH about 14) was separated and was then extracted with DCM (3×5 mL). The combined organic phases was washed with water and brine, and dried with MgSO4. The solvent was removed under vacuum. 20 mg pure product was obtained as an off-white solid. MS m/z 327 [M+H]+.

Provenance & Evidence