Sodium Iodide → 7-(3,5-Dichloro-benzyl)-5-methoxy-9-(4-methoxy-benzyloxy)-6,7-dihydro-pyrrolo[3,4-g]quinolin-8-one

Participants

Reaction Conditions

Reaction Steps

5-Methoxy-9-(4-methoxy-benzyloxy)-6,7-dihydro-pyrrolo[3,4-g]quinolin-8-one 304 (17 mg, 0.049 mmol) was dissolved in dimethylformamide (0.3 ml) and cooled to 0° C. After adding sodium hydride (2.5 mg, 0.064 mmol), the reaction was stirred for 5 minutes at 0° C. 3,5-Dichlorobenzylchloride (11.5 mg, 0.059 mmol) and a catalytic amount of sodium iodide were then added. The reaction mixture was warmed to room temperature and stirred at room temperature for 30 minutes. It was then cooled to 0° C., acidified with acetic acid (0.030 ml), and concentrated in vacuo. The resulting residue was diluted with ethyl acetate, washed twice with water, once with brine, and concentrated in vacuo. The residue was purified by silica gel chromatography (99/1-ethyl acetate/acetic acid) to afford 7-(3,5-dichloro-benzyl)-5-methoxy-9-(4-methoxy-benzyloxy)-6,7-dihydro-pyrrolo[3,4-g]quinolin-8-one 307 (7 mg, 40%). 1H NMR (CDCl3) δ 9.0 (dd, 1H), 8.40 (dd, 1H), 7.60 (d, 2H), 7.55 (m, 1H), 7.20 (m, 3H), 6.80 (d, 2H), 5.60 (s, 2H), 4.75(s, 2H), 4.40 (s, 2H), 3.95 (s, 3H), 3.75 (s, 3H). MS: 509.1 (M+1).

Provenance & Evidence