2-Substituted 4-anilinopiperidines from 2H-thiopyran-2-thiones
摘要:
4-Dimethylamino-5,6-dihydro-2H-thiopyran-2-thiones were converted to 4-anilinodihydropyridine-2(1H)-thiones in several steps. The latter were alkylated giving a mixture of isomeric methylthioderivatives which were hydrogenated with Raney nickel yielding 2-alkyl- and 2-aryl-substituted 4-anilinopiperidines. The configurations as well as the conformations of the formed diastereoisomers are investigated by means of NMR. (C) 2001 Elsevier Science Ltd. All rights reserved.
2-Substituted 4-anilinopiperidines from 2H-thiopyran-2-thiones
摘要:
4-Dimethylamino-5,6-dihydro-2H-thiopyran-2-thiones were converted to 4-anilinodihydropyridine-2(1H)-thiones in several steps. The latter were alkylated giving a mixture of isomeric methylthioderivatives which were hydrogenated with Raney nickel yielding 2-alkyl- and 2-aryl-substituted 4-anilinopiperidines. The configurations as well as the conformations of the formed diastereoisomers are investigated by means of NMR. (C) 2001 Elsevier Science Ltd. All rights reserved.
2-Substituted 4-anilinopiperidines from 2H-thiopyran-2-thiones
作者:Robert Weis、Klaus Schweiger、Werner Seebacher
DOI:10.1016/s0040-4020(01)00830-4
日期:2001.9
4-Dimethylamino-5,6-dihydro-2H-thiopyran-2-thiones were converted to 4-anilinodihydropyridine-2(1H)-thiones in several steps. The latter were alkylated giving a mixture of isomeric methylthioderivatives which were hydrogenated with Raney nickel yielding 2-alkyl- and 2-aryl-substituted 4-anilinopiperidines. The configurations as well as the conformations of the formed diastereoisomers are investigated by means of NMR. (C) 2001 Elsevier Science Ltd. All rights reserved.