Sulfuryl chloride → 9-chlorosulfonyl-5,6-dihydro-5-oxo-11H-indeno[1,2-c] Isoquinoline

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Reaction Steps

Compound 6 (40 g, 0.17 mol) was added in small portions to chlorosulfonyl chloride (112 mL, 1.71 mol) at 0°C. and the reaction mixture was allowed to warm to room temperature and stir for 2 h. The reaction mixture was slowly poured on ice and the resulting yellow solid was filtered, washed thoroughly with water and EtOAc and dried in vacuo to provide the above-titled product 7 (52 g, 92%). 1H NMR (DMSO-D6): δ 3.91 (s, 2H), 7.43-7.48 (m, 1H), 7.60 (d, J=7.2 Hz, 1H), 7.74-7.76 (m, 2H), 7.79 (s, 1H), 7.90 (d, J=7.5 Hz, 1H), 8.23 (d, J=7.8 Hz, 1H), Anal. Calcd for C16H12ClNO4S: C, 54.94; H, 3.46; N, 4.00. Found C, 55.28; H, 3.43, N, 3.68, Karl-Fisher, 2.95.

Provenance & Evidence