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Communication | Regular issue | Vol 24, No. 10, 1986, pp.2803-2807
Published online, 1st January, 1970
DOI: 10.3987/R-1986-10-2803
Thermal Reactions of o-Aminophenols and Dimethyl Actylenedicarboxylate

Norio Kawahara,* Takako Shimamori, Tsuneo Itoh, and Haruo Ogura

*Hokkaido College of Pharmacy, 7-1 Katsuraoka-cho, Otaru 047-02, Japan


o-Aminophenols reacted with dimethyl acetylenedicarboxylate (DMAD) in refluxing dioxane to give 1,4-benzoxazine derivatives and their isomers. Further, novel tricyclic compounds and benzoxazole derivative were prepared in this reaction.