Triethylamine → n-(1-(Pyridin-4-ylmethyl)piperidin-4-yl)-2-(4-(trifluoromethyl)benzyl)-2,3,4,5-tetrahydro-1h-pyrido[4,3-b]indole-8-carboxamide

Participants

Reaction Steps

A solution of the dihydrochloride salt of step 1, above (65 mg, 0.12 mmol) was dissolved in DMF (2.0 mL) and 4-(bromomethyl)pyridine hydrobromide (2×35 mg, 2×0.14 mmol) and triethylamine (2×80 μL, 2×58 mg, 2×570 μmol) were added. The resulting reaction mixture was allowed to stir at room temperature overnight, poured into saturated sodium bicarbonate solution (20 mL) to give an off-white solid which was triturated with ethyl ether to provide N-(1-(pyridin-4-ylmethyl)piperidin-4-yl)-2-(4-(trifluoromethyl)benzyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole-8-carboxamide (Compound 50, 60%). 1H NMR (DMSO-d6, 300 MHZ) 11.02 (s, 1H), 8.49 (d, J=4.7 Hz, 2H), 7.99 (d, J=8.0 Hz, 1H), 7.84 (s, 1H), 7.71 (d, J=8.0 Hz, 2H), 7.62 (d, J=8.3 Hz, 2H), 7.55 (d, J=8.3 Hz, 1H), 7.31 (d, J=4.7 Hz, 2H), 7.25 (d, J=8.3 Hz, 1H), 3.86 (s, 2H), 3.82-3.70 (m, 1H), 3.63 (s, 2H), 3.50 (s, 2H), 2.90-2.74 (m, 6H), 2.06 (t, J=11.1 Hz, 2H), 1.77 (d, J=10.2 Hz, 2H), 1.60 (q, J=10.9 Hz, 2H) ppm; MS (ES) 548 (M+H).

Provenance & Evidence