A. R. Katrizky, M. Sewell, R. D. Topsom
1966
Citations
0
Influential Citations
25
Citations
Journal
Tetrahedron
Abstract
Abstract 1,4-Benzodioxin and its 2-phenyl derivative can be prepared by the dehyration of their respective 2-hydroxy compounds under suitable conditions. 2-Methyl-1,4-benzodioxin can be similarly prepared but is more readily obtained by the isomerization of 2-methylene-1,4-benzodioxan. The structures of these compounds have been authenticated by analysis, UV, PMR and IR spectroscopy and by hydrogenation experiments. 2-Hydroxy-1,4-benzodioxans are shown to exist as such rather than as their open-chain carbonyl tautomers. Previous descriptions of the preparation and structures of the above compounds are discussed.