Formaldehyde → 6-{1-[(2,2-Diphenyl-ethyl)-methyl-amino]-indan-5-yloxy}-nicotinamide

Participants

Reaction Steps

Add paraformaldehyde (57 mg) and NaBH3CN (46 mg, 0.734 mmol) to a solution of 6-[1-(2,2-Diphenyl-ethylamino)-indan-5-yloxy]-nicotinamide (example 9, 110 mg, 0.245 mmol) in 5% AcOH/MeOH (3 ml) and stir at ambient temperature for two days. Concentrate the reaction mixture and partition remaining residue between EtOAc and 1M aq. K2CO3. Separate layers and wash organic with 1M aq. K2CO3 and brine before dying (MgSO4) and concentrating. Purify on silica gel (5% (1N NH3/MeOH)/45% EtOAc/DCM) to obtain 74 mg of the title compound as a white solid. Mass spectrum (ion spray): m/z=464 (M+1); 1HNMR (CDCl3): 8.54 (s, 1H), 8.15 (d, 1H), 7.30-7.15 (m, 10H), 6.95-6.81 (m, 4H), 5.81 (br. s, 2H), 4.39 (t, 1H), 4.20 (t, 1H), 3.02 (d, 2H), 2.94-2.75 (m, 2H), 2.27 (s, 3H), 2.06 (m, 2H).

Provenance & Evidence