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: purchase@heterocycles.com

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

Paper | Regular issue | Vol 63, No. 5, 2004, pp.1067-1075
Published online, 5th March, 2004
DOI: 10.3987/COM-04-10006
Facile Synthesis of 4H-1,3-Benzoselenazines by the Aryne Reaction

U. Narasimha Rao, Ramadas Sathunuru, and Edward R. Biehl*

*Chemistry Department, Southern Methodist University, Dallas, TX 75275-0314, U.S.A.

Abstract

Attempts to prepare benzoselenazoles by trapping benzynes with selenoureas failed. These reactions gave instead symmetrically substituted diaryl diselenides. However, when the selenoureas were converted to selenoazadienes, 4H-1,3-benzoselenazines were obtained in excellent yields. Furthermore, addition of the selenium atom of the selenoazadienes occurred regioselectively at the position 1 of 3-methoxybenzyne and 3,4-dimethoxybenzyne.