Selective Beckmann Rearrangements. Preparation of Isomeric 2,6- and 3,6-Diazepinoisoquinolines and -pyridoindoles
作者:Pál Scheiber、Péter Nemes
DOI:10.3987/com-95-7112
日期:——
Z and E oximes (2, 3, 6, 7) of some benzoquinolizidones (1) and indoloquinolizidone were converted into isomeric diazepinoisoquinolines (4, 5) and diazepinopyridoindoles (8, 9), respectively, via Beckmann ring enlargement. The 1-isopropyl-1,3,4,6,7, 11b-hexahydro-2H-benzo[a]quinolizin-2-one (Ic) exhibits a cis ''b'' B/C ring junction.