Preparation of 9??aryl (or heteroaryl) methylidene??10??(methoxyimino)??phenanthrenes and their thermal electrocyclisation to fused quinolines

…, J Stephanidou??Stephanatou

Index: Nicolaides, Demetrios N.; Litinas, Konstantinos E.; Papageorgiou, Georgios K.; Stephanidou-Stephanatou, Julia Journal of Heterocyclic Chemistry, 1991 , vol. 28, # 1 p. 139 - 143

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Citation Number: 12

Abstract

Abstract o-Quinone methanide N-methoxyimines 6a-c, 7a-c, 11a-b and 12a, easily prepared from the reaction of 10-(methoxyimino) phenanthrene-9-one (3) with phosphonium salts 5a- c, 10a-b in the presence of lithium hydroxide, are thermally converted into dibenzo [f, h] quinolino [2, 3-x] fused compounds 9a-c and 13a-b, in high yield.