Conversion of 6-phenylimino-2H-thiopyran-4-amines to 1-phenyl-2,3-dihydro-4(1H)-pyridinones
作者:R. Weis、U. di Vora、W. Seebacher、K. Schweiger
DOI:10.1007/bf00807066
日期:1995.12
6-Phenylimino-3,6-dihydro-2H-thiopyran-4-amines (1) were converted to 1-phenyl-5,6-dihydropyridine-2(1H)-thiones (3). Those were akylated and hydrolyzed, thus yielding 6-melhylthio-1-phenyl-2,3-dihydro-4(1H)-pyridinones (5). Finally, the methylthio group was removed with Raney nickel giving the title compounds 6. The relative configurations of the formed diastereoisomeric dihydropyridinones have been investigated by NOE measurements.