Water → [2-(6-chloro-8-nitro-9H-beta-carbolin-7-ylsulfanyl)-ethyl]-dimethyl-amine

Beteiligte Stoffe

Reaktionsschritte

A 25 ml round-bottom flask with magnetic stirrer was charged with 6-chloro-7-fluoro-8-nitro-9H-β-carboline (98 mg, 0.37 mmol) in 2 ml of anhydrous DMF. A second 10 ml round-bottom flask with magnetic stirrer was charged with 2-dimethylamino-ethanethiol hydrochloride (100 mg, 0.70 mmol) in 2 ml anhydrous DMF. To the resulting suspension was added n-butyllithium (0.43 ml of 1.6 M solution in hexanes, 0.69 mmol) via syringe and the mixture was stirred for 5 min at RT. Next, the thioanion solution was added via syringe to 6-chloro-7-fluoro-8-nitro-9H-β-carboline, and the resulting red solution was stirred at RT for 30 min. The reaction mixture was slowly added to a 5:1 mixture of H2O/saturated aqueous sodium bicarbonate (30 ml) and allowed to sit at RT for several hours. The resulting precipitated solid was collected via suction filtration and air-dried to afford 109 mg of [2-(6-chloro-8-nitro-9H-β-carbolin-7-ylsulfanyl)-ethyl]-dimethyl-amine as an orange solid (83%). LCMS (ammonium acetate standard method) retention time=1.35 min. (M+=351; M−=349). 1H-NMR (300 MHz, CD3OD, ppm) δ 8.92 (1H, d, J=1.0 Hz) 8.66 (1H, s) 8.43 (1H, d) 8.19 (1H, dd) 3.18-3.13 (2H, m) 2.57-2.52 (2H, m) 2.21 (6H, s).

Herkunft & Nachweise