Synthesis of 4-Alkylidene-4H-3,1-benzoxazine Derivatives by Acid-Catalyzed Cyclization
of 2-Isocyanophenyl Ketones in the Presence of a Vinyl Ether
Kazuhiro Kobayashi*, Yuta Okamura, Hisatoshi Konishi Division of Applied Chemistry, Department
of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyama-minami,
Tottori 680-8552, Japan Fax: +81(857)315263; e-Mail: kkoba@chem.tottori-u.ac.jp;