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Communication | Regular issue | Vol 31, No. 5, 1990, pp.783-786
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5335
Flash Vaccum Pyrolysis of Pyridine N-Oxides

Takashi Itoh, Akio Ohsawa,* Yoshikuni Itoh, and Hiroshi Igeta

*School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan

Abstract

Pyridine N-oxide was pyrolysed under flash vacuum pyrolysis conditions to afford pyridine, pyrrole, 2-pyridone, 2-cyanomethylpyridine, and bipyridyls. Phenylpyridine N-oxides gave cyanonaphthalenes and naphthalene other than the above mentioned products. Pyrolysis of 2,6-disubstituted pyridine N-oxides provided the products which were supposed to be derived from the intramolecular oxygen migration.