4-(2,4-Dichlorophenyl)pyridin-2(1H)-one → tert-Butyl 7-(4-(2,4-dichlorophenyl)-2-oxopyridin-1(2H)-yl)-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate

Participants

Reaction Steps

The compound was prepared from tert-butyl 7-bromo-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate (200 mg, 0.548 mmol) and 4-(2,4-dichlorophenyl)pyridine-2(1H)-one (132 mg, 0.548 mmol) according to the procedure in Example 1 (step c). Purification by flash column chromatography (silica gel, hexanes/EtOAc, 100:0 to 80:20 to 50:50 then 25:75) provided the title compound (56 mg, 20%) as a yellow solid: 1H NMR (500 MHz, CDCl3) δ 7.56-7.52 (m, 2H), 7.47 (d, J=7.0 Hz, 1H), 7.39-7.32 (m, 3H), 7.10 (br s, 1H), 6.69 (s, 1H), 6.35 (d, J=5.7 Hz, 1H), 4.66 (s, 2H), 3.85 (br s, 2H), 3.65 (s, 3H), 2.84 (br s, 2H), 1.51 (s, 9H).

Provenance & Evidence