139715-26-7Relevant academic research and scientific papers
THERMAL ISOMERIZATION OF 1-MORPHOLINO-3-PHEHYL (OR VINYL)-ALLENES: SYNTHESIS OF THE OXAZINOAZEPINE FRAMEWORK
Mayer, Theo,Maas, Gerhard
, p. 205 - 208 (2007/10/02)
1-Morpholino-3-phenylallenes isomerize to 3,4,6,12b-tetrahydro-1H-oxazinobenzazepines at >/= 105 deg C.Similarly, 1-morpholino-3-vinylallenes are transformed into 3,4,10,10a-tetrahydro-1H-oxazinoazepines.Formation of these novel heterocycles is rationalized by a 1,3-proton shift in the morpholinoallenes, followed by 1,7-electrocylization of the α,β,γ,δ-unsaturated azomethine ylide thus formed.
