Water → 3-Chloro-2-phenyl-1,5-benzothiazepin-4(5H)-one

반응식

[C:1]1([CH:7]2[CH2:13][C:12](=[O:14])[NH:11][C:10]3[CH:15]=[CH:16][CH:17]=[CH:18][C:9]=3[S:8]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Cl:19]N1C(=O)CCC1=O.O>CN(C)C=O>[Cl:19][C:13]1[C:12](=[O:14])[NH:11][C:10]2[CH:15]=[CH:16][CH:17]=[CH:18][C:9]=2[S:8][C:7]=1[C:1]1[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1

참가 물질

실험 절차

2,3-Dihydro-2-phenyl-1,5-benzothiazepin-4(5H)-one (25.5 grams, 0.1 mole) is stirred in 250 ml of dimethylformamide. To the stirred solution is added a solution of N-chlorosuccinimide (27 grams, 0.2 mole) in 100 ml of dimethylformamide. The mixture is stirred at 105°-110°C for 5 hours, followed by cooling. The cooled solution is poured into 1.8 liters of cold water and a solid precipitates. The crude product (28 grams) has a melting point of 238°-240°C. The crude product is crystallized from a mixture of 30 ml hot dimethylformamide and 90 ml acetonitrile yielding 26.2 grams of the title compound, melting point 241°-243°C.