Acetic Acid → HCID 9838958, compound

Participants

Reaction Steps

3-(Piperidin-4-yl)-2-phenyl-1H-indole (200 mg, 0.7 mmol), sodium cyanoborohydride (51 mg, 0.8 mmol), formaldehyde (60 μl, 40% in H2O, 0.8 mmol) and AcOH (97 μl, 1.7 mmol) were stirred in MeOH (5 ml) at 0° C. for 1 h, then room temperature for 2 h. The solution was poured into saturated NaHCO3 solution and extracted with EtOAc. The organic layer was washed with water and brine, dried, and evaporated in vacuo to give white crystals (49 mg, 23%), mp 245-246° C. (from EtOH); δH (360 MHz, d6-DMSO) 1.88 (2H, d, J 13, NCH2CHAHB), 2.60-2.80 (2H, m, NCH2CHAHB), 2.76 (3H, s, CH3), 3.00-3.20 (3H, m, CH2CH and NCHAHB), 3.44 (2H, d, J 12, NCHAHB), 6.99 (1H, t, J 7, indole-H), 7.09 (1H, t, J 7, indole-H), 7.20-7.50 (6H, m, ArH), 7.98 (1H, d, J 7, ArH), 11.20 (1H, br s, indole NH); m/z (ES+) 291 (M++H).

Provenance & Evidence