Synthesis of the first examples of fully unsaturated monocyclic 1,4-oxazepines
作者:Jyoji Kurita、Kuniyoshi Iwata、Takashi Tsuchiya
DOI:10.1039/c39860001188
日期:——
Photolysis of the 3-aza-7-oxatricyclo[4.1.0.02,5]hept-3-enes (3), prepared from pyridines via five steps, results in ring expansion to give the novel 1,4-oxazepines (4).