Potassium Carbonate → 9-[(3-iodophenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one

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Reaction Steps

A suspension of 5-carbomethoxy-1,2-dihydro-9H-carbazol-4(3H)-one (680 mg, 3.5 mM), 3-iodobenzyl bromide (1.2 g, 4.7 mM), and potassium carbonate (500 mg, 3.61 mM) in 20 mL DMF was stirred at room temperature for 18 hours. The mixture was diluted with ethyl acetate, washed with H2O and saturated brine, dried over anhydrous magnesium sulfate, filtered, concentrated. The residue was purified trituration with methylene chloride-diethyl ether) to afford 0.70 g (55%) of the 9-[(3-iodophenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one as a white solid. 1H NMR (DMSO-d6) δ7.7-7.6 (m, 3H), 7.2 (m, 2H), 7.1 (t, 1H, J=8 Hz), 6.95 (d, 1H, J=8Hz), 5.6 (s, 2H), 3.8 (s, 3H), 3.0 (t, 2H, J=6 Hz), 2.5 (t, 2H, J=6 Hz), and 2.2 (m, 2H). IR (KBr, cm−1) 1732, 1639, 1441, 1421, 1273, 1117, and 763. MS (ES) m/e 458, 460.

Provenance & Evidence