Water → 4-(2-Chlorophenyl)-9-hydroxy-6-[3-(phenylsulfanyl)propyl]pyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione

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A solution of the bromide (58) (41 mg, 0.085 mmol) prepared as described in example 172, thiophenol (9.5 μL, 0.093 mmol) and triethylamine (0.25 mL, 3.40 mmol) in p-dioxane (1.5 mL) was refluxed for 16 h. Water was added and the mixture was extracted with ethyl acetate. The organic layer was dried, the drying agent was removed and the solution was concentrated to dryness the sulfide (131) directly (37.2 mg, 85%), which crystallised from ethyl acetate/petroleum ether as an orange powder, mp 229–231° C. 1H NMR δ [(CD3)2SO] 11.06 (br s, 1H), 9.37 (s, 1H), 8.37 (d, J=2.4 Hz, 1H), 7.76 (s, 1H), 7.60–7.42 (m, 5H), 7.25–7.19 (m, 4H), 7.16–7.10 m, 2H), 4.57 (t, J=6.8 Hz, 2H), 2.98 (m, 2H), 2.01 (m, 2H). Found: C, 67.36; H, 4.29; N, 5.36. C29H21ClN2SO3.114H2O requires C, 67.31; H, 4.19; N, 5.41.

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