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: ¥ 4,320 (Yen only)
Period: This Article can be accessed for 7 days.

Paper | Regular issue | Vol 78, No. 3, 2009, pp.623-633
Published online, 20th October, 2008
DOI: 10.3987/COM-08-11535
A Convenient Method of Preparation of 3,3’-Dichloro-5,5’-bi-1,2,4-triazine and Its Synthetic Applications

Ewa Wolińska*

*Department of Chemistry, University of Podlasie, ul. 3-go Maja 54, 08-110 Siedlce, Poland

Abstract

A convenient method for preparing of 3,3'-dichloro-5,5'-1,2,4-triazine (4) and its application to the synthesis of 3,3'-diamino-5,5'-bi-1,2,4-triazines 6a i by the nucleophilic aromatic substitution are described. An attempt to synthesis of cyclophanes containing 5,5'-bi-1,2,4-triazine subunit by ring-closing metathesis of the alkenyl ethers 7a,b have been unsuccessful. A crossover experiment clearly shows that nitrogen atoms of the 1,2,4-triazine ring coordinate to the ruthenium catalyst and deactivate it.