Potassium Carbonate → HCID 59374997, compound

Participants

Reaction Steps

A mixture of 7-hydroxy-4-(2-methyl-3-(6-methyl-1-oxoisoindolin-2-yl)phenyl)-9H-carbazole-1-carboxamide (Example 40-2, 30 mg, 0.065 mmol) and potassium carbonate (36 mg, 0.260 mmol) in DMF (1.0 mL) was stirred at rt for 30 min, then was treated with (2-bromoethoxy)(tert-butyl)dimethylsilane (62.2 mg, 0.260 mmol) and heated at 90° C. for 4 h. The mixture was filtered, the filtrate was treated with hydrogen chloride (4 M in dioxane, 1 mL) and the solution was stirred at rt overnight. The solution was concentrated under vacuum and the residue was purified by preparative HPLC to provide 7-(2-hydroxyethoxy)-4-(2-methyl-3-(6-methyl-1-oxoisoindolin-2-yl)phenyl)-9H-carbazole-1-carboxamide as an off-white solid (16.5 mg, 45%). 1H NMR (400 MHz, DMSO-d6) δ 11.39 (1H, s), 8.17 (1H, br. s.), 7.94 (1 H, d, J=7.9 Hz), 7.53-7.65 (3H, m), 7.49 (3H, t, J=7.8 Hz), 7.27-7.39 (2H, m), 6.99 (1H, d, J=7.7 Hz), 6.92 (1H, d, J=8.8 Hz), 6.59 (1H, dd, J=8.8, 2.4 Hz), 4.75-4.98 (3H, m), 3.95-4.07 (2H, m), 3.69-3.80 (2H, m), 2.44 (3H, s). Mass spectrum m/z 506.0 (M+H)+.

Provenance & Evidence