反应详情

To a solution of 3-bromo-5H,6H,12H,13H-indeno[2,3-a]pyrrolo[3,4-c]carbazole-7-(7H)one (Compound I-9) (435 mg, 1.1 mmol), trimethylsilylacetylene (0.47 ml, 3.3 mmol) and triethylamine (1.0 mL) in DMF (11 mL) was added bis(triphenylphosphine)palladium(II)chloride (17 mg). The solution was heated in a sealed reaction tube at 100°-110° C. for 24 h. The mixture was cooled to ambient temperature, filtered through a pad of celite then the solvent concentrated at reduced pressure. The product was dissolved in DMF (8 mL), MeOH (8 mL) cesium fluoride (370 mg, 2.4 mmol) added and the mixture stirred at ambient temperature 24 h. The solvent was concentrated at reduced pressure to give a dark solid. Purification by column chromatography (silica gel, EtOAc:MeOH; 10:1, Rf=0.53) give 30 mg of a tan solid. The compound was further purified by preparative TLC (silica gel, EtOAc:hexane; 3:1) to give Compound I-36 as a tan solid, mp>300° C. 1H NMR (DMSO-d6, 300 MHz): d 4.2 (s, 2H), 5.0 (s, 2H), 7.38-7.46 (m, 3H), 7.58-7.75 (m,4H), 8.15 (s, 1H), 8.63 (s, 1H), 9.42 (d, 1H, J=9Hz), 12.19 (s, 1H); MS m/e=335 (m+).

1. temperatureThe solution was heated in a sealed reaction tube at 100°-110° C. for 24 h
2. filtrationfiltered through a pad of celite
3. concentrationthe solvent concentrated at reduced pressure
4. dissolutionThe product was dissolved in DMF (8 mL)
5. concentrationThe solvent was concentrated at reduced pressure
6. customto give a dark solid
7. customPurification by column chromatography (silica gel, EtOAc:MeOH; 10:1, Rf=0.53)