Potassium Carbonate → tert-Butyl 5-methyl-7-(2-oxo-4-((5-(trifluoromethyl)pyridin-2-yl)methoxy)pyridin-1(2H)-yl)-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate

Participants

Reaction Steps

2-(Bromomethyl)-5-(trifluoromethyl)pyridine (140 mg, 0.58 mmol), tert-butyl 7-(4-hydroxy-2-oxopyridin-1(2H)-yl)-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate (230 mg, 0.58 mmol) and K2CO3 (160 mg, 1.16 mmol) were stirred in acetonitrile/DMF (3 mL/0.5 mL) for 72 h. The mixture was diluted with methylene chloride, washed with water and concentrated to provide the title compound (96 mg, 29%) as a yellow solid: 1H NMR (300 MHz, CDCl3) δ 8.88 (s, 1H), 8.00 (dd, J=8.2, 2.0 Hz, 1H), 7.63 (d, J=8.2 Hz, 1H), 7.51 (d, J=8.2 Hz, 1H), 7.36 (d, J=7.6 Hz, 1H), 7.28-7.26 (m, 1H), 7.00 (d, J=7.7 Hz, 1H), 6.12 (dd, J=7.6, 2.7 Hz, 1H), 6.04 (d, J=2.7 Hz, 1H), 5.26 (s, 2H), 4.63-4.58 (br m, 2H), 3.87-3.76 (br m, 2H), 3.63 (s, 3H), 2.86-2.76 (br m, 2H), 1.50 (s, 9H).

Provenance & Evidence