## Abstract Mesomeric heteropentalene betaines are conjugated fused polyheterocyclic structures that represent interesting intermediates for organic synthesis. Five such structures, containing at least four nitrogen atoms and various substituents, have been characterized by ^1^H, ^13^C and ^15^N NM
Spectral assignments for 1H,13C and 15N solution and solid-state NMR spectra of s-tetrazine and dihydro-s-tetrazine derivatives
✍ Scribed by Pascal Palmas; Elzéar Girard; Eric Pasquinet; Thomas Caron; Didier Poullain
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 377 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1920
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✦ Synopsis
Abstract
Tetrazine‐based organic species are interesting intermediates for organic synthesis and represent a source of new materials bearing specific properties with potential applications in biology and material science. ^1^H, ^13^C, ^15^N NMR measurements carried out in solution and in the solid‐state have been used to characterize a series of 3,6‐disubstituted 1,2,4,5‐tetrazine/dihydrotetrazine new derivatives. Experimental results presented here provide data for the assignment of ^15^N chemical shifts including new organic small molecules; two polymers having the tetrazine ring in the main chain and several previously published compounds. We report apparently for the first time ^15^N experimental chemical shift data for tetrazine systems in the solid state. Copyright © 2007 John Wiley & Sons, Ltd.
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