Acetic Acid → 5-(6-methyl-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-4-yloxy)-indole-1-carboxylic acid (3-trifluoromethyl-phenyl)-amide

Participants

Reaction Conditions

Reaction Steps

5-(6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-4-yloxy)-N-(3-(trifluoromethyl)phenyl)-1H-indole-1-carboxamide (140 mg, 0.320 mmol) is suspended in 1,2-dichloroethane (5 mL), and formaldehyde (50 μl, 0.672 mmol) and acetic acid (36 μl, 0.629 mmol) and sodium triacetoxyborohydride (139 mg, 0.656 mmol) are added and the mixture heated to 60° C. overnight. The reaction is cooled to rt, diluted with water, brine and DCM. The organic phase is removed, dried, and concentrated to an oil that is purified via FCC (0-10% NH3/MeOH:DCM) to obtain 5-(6-methyl-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-4-yloxy)-indole-1-carboxylic acid (3-trifluoromethyl-phenyl)-amide. MS (ESI) m/z 454.95 (M+1); 1H NMR (400 MHz, DMSO-d6) δ ppm 10.38 (s, 1 H), 8.56 (s, 1 H), 8.27 (d, J=9.09 Hz, 1 H), 8.09-8.13 (m, 2 H), 7.96 (s, 1 H), 7.65 (t, J=8.08 Hz, 1 H), 7.48-7.51 (m, 2 H), 7.15 (dd, J=8.97, 2.40 Hz, 1 H), 6.80 (d, J=3.79 Hz, 1 H), 3.91 (s, 4 H), 2.52 (s, 3 H).

Provenance & Evidence