Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Special issue | Vol 52, No. 1, 2000, pp.73-79
Published online, 1st January, 1970
DOI: 10.3987/COM-99-S11
Thermal Ring Transformation of 2,2-Disubstituted Benzothiazoline 1-Oxides

Hiroshi Shimizu,* Michiko Kanematsu, Kiyomi Hashimoto, and Kazuhiro Kobayashi

*Gifu Pharmaceutical University, 6-1 Mitahora-higashi 5-chome, Gifu 502-8585, Japan


Thermal rearrangement of 2,2-disubstituted benzothiazoline 1-oxides (1) in aprotic solvent afforded the corresponding 1,4-benzothiazines (2) and (3). The thermal reaction performed in the presence of electron-deficient acetylenic compounds produced new tricyclic compounds (7) whose structures have been established by an X-Ray crystal structure determination.