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Communication | Special issue | Vol 11, No. 1, 1978, pp.331-336
Published online, 1st January, 1970
DOI: 10.3987/S(N)-1978-01-0331
Synthesis and Cycloaddition Reactions of Di- and Trisubstituted 1,3-Oxazepine Derivatives

Takashi Toda,* Takeo Takase, Toshio Mukai, and Yoshizo Suzuki

*Department of Chemistry, Faculty of Science, Tohoku University, Aoba-ku, Ssendai 980-8578, Japan


The reactions of pyrylium salts and sodium azide are proven to be a general synthetic method for di- to pentaphenyl-1,3-oxazepines. Cycloadditions of mono-, di-, and triphenyl-1,3-oxazepines with cyclopentadienone and triazoline derivatives were also investigated.