1,3,4-OXADIAZINE DERIVATIVES FROM CYCLOHEXANONE ENAMINES AND ASYMMETRIC DIIMIDES; POSSIBILITY OF RING-CHAIN TAUTOMERISM IN SUCH HETEROCYCLIC SYSTEM

Article abstract of DOI:10.1016/S0040-4020(01)92366-X

1,3,4-oxadiazine derivatives, in equilibrium with their corresponding trisubstituted enamine isomers, are obtained in a regiospecific way from cyclohexanone enamines and ethoxycarbonyl aroyl diimides.Such an equilibrium is not present in analogous oxadiazine systems, derived from aryl aroyl diimides.