反应详情

Morpholine (2 mL, 23 mmol) was added to a round bottom flask containing (50 mg, 0.12 mmol) of 1-(4-bromobutyl)-3-(4-chlorophenyl)-1,3-dihydro-2,1,3-benzothiadiazole 2,2-dioxide (made in general procedure IV). The reaction flask was covered with a septum and stirred overnight at room temperature. The reaction solution was concentrated in vacuo and the crude product was pre-adsorbed onto Celite and purified via Isco chromatography (Redisep, silica, gradient 1-8% methanol in dichloromethane with ammonia) to afford 29 mg (78%) of 1-(4-chlorophenyl)-3-(4-morpholin-4-ylbutyl)-1,3-dihydro-2,1,3-benzothiadiazole 2,2-dioxide. HPLC purity 100.0% at 210-370 nm, 8.2 minutes Xterra RP18, 3.5 u, 150×4.6 mm column, 1.2 mL/min, 85/15-5/95 (ammonium formate buffer pH=3.5, acetonitrile/MeOH) for 10 minutes, hold 4 minutes.

1. concentrationThe reaction solution was concentrated in vacuo
2. custompurified via Isco chromatography (Redisep, silica, gradient 1-8% methanol in dichloromethane with ammonia)