127391-38-2Relevant articles and documents
HETEROCYCLIC SYNTHESIS BY ELECTROCYCLIZATION OF EXTENDED DIPOLES: A NOVEL ACCESS TO THE INDOLIZINE AND QUINOLIZINE SYSTEMS
Eberbach, Wolfgang,Maier, Wolfram
, p. 5591 - 5594 (2007/10/02)
On thermal activation α-butenynyl substituted pyridine-N-oxides 4 undergo a multistep rearrangement affording 4-oxo-4H-quinolizines (8) and 2-acylindolizines (9).In the geometrical isomeriziation of E-4 to Z-4 annulated isoxazolidines (7) are involved as unstable intermediates.