| publication name | Tautomerism of guanidines studied by 15N NMR: 2-hydrazono-3-phenylquinazolin-4 (3H)-ones and related compounds |
|---|---|
| Authors | Ion Ghiviriga, Bahaa El-Dien M. El-Gendy, Peter J. Steeld and Alan R. Katritzky |
| year | 2009 |
| keywords | |
| journal | |
| volume | Not Available |
| issue | Not Available |
| pages | Not Available |
| publisher | Not Available |
| Local/International | International |
| Paper Link | http://pubs.rsc.org/en/content/articlelanding/2009/ob/b907577a#!divAbstract |
| Full paper | download |
| Supplementary materials | Not Available |
Abstract
2-Hydrazono-3-phenylquinazolin-4(3H)-ones 11a–i are shown by 15N NMR to exist in DMSO solution predominantly as the imino tautomers B and not the amino tautomers A. 2-Hydrazino-benzimidazole derivative 12 and 2-hydrazino-4,6-dimethylpyrimidine derivative 13 were found to exist predominantly as the amino tautomers.