A CONVENIENT SYNTHESIS OF SUBSTITUTED QUINOLINES BY THERMAL OR PHOTOCHEMICAL ELECTROCYCLIC REARRANGEMENT OF o-VINYL IMIDATES UNDER NON-ACIDIC CONDITIONS.

Article abstract of DOI:10.1016/0040-4039(88)85281-X

Imidates 4a-e, Table 1, were prepared by treatment of amides 3a-e with Et3O(1+)BF4(1-) in the presence of excess Na2HPO4.These underwent smooth rearrangement to quinolines 5a-e by thermal or photochemical activation.