Synthesis of the First Examples of Fully Unsaturated Monocyclic 1,4-Oxazepines
Photolysis of the 3-aza-7-oxatricyclo2,5>hept-3-enes (3), prepared from pyridines via five steps, results in ring expension to give the novel 1,4-oxazepines (4).
Studies on Diazepines. XXV. Syntheses of Fully Unsaturated 1,4-Oxazepines and 1H-1,4-Diazepines Using Photochemical Valence Isomerization of Tricycloheptene Systems
3-Azatricyclo2,5>hept-3-ene derivatives prepared from pyridines via five steps were found to be useful synthons for fully unsaturated monocyclic seven-membered heterocyclic rings.Photolysis of the 7-oxa derivatives 15 resulted in valenc
Kurita, Jyoji,Iwata, Kuniyoshi,Tsuchiya, Takashi
p. 3166 - 3174
(2007/10/02)
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