Chemische Berichte

Photochemical Dehydrogenation, Ring Contraction, and Ring Expansion of Hydrogenated Derivatives of Benzoxazino??benzoxazine, Quinoxalino??quinoxaline, and …

E Tauer, KH Grellmann

文献索引：Tauer, Erich; Grellmann, Karl-Heinz Chemische Berichte, 1990 , vol. 123, # 5 p. 1149 - 1154

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被引用次数: 13

摘要

The photochemical properties of the title compounds have been investigated and compared. The benzoxazino-benzoxazine derivatives 1 are photochemically converted into hydrogenated oxazole derivatives. In some cases this ring contraction is accompanied by a dehydrogenation reaction whereby the heterocyclic ring system becomes aromatic. Hydrogenated quinoxalino-quinoxalines also undergo a photodehydrogenation reaction ...