Process for preparing substituted benzoyl cyanide amidinohydrazones
US6329521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Feb 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D249/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for preparing a compound of the general formula (I): ##STR1## wherein PA1 R.sub.1 to R.sub.5 are independently selected from hydrogen, halogen, C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl or C.sub.1-6 alkoxy, all optionally substituted by one or more of halogen, hydroxy and aryl groups, as well as being independently selected from amino, mono- or disubstituted amino, alkenyloxy, acyl, acyloxy, cyano, nitro, aryl and alkylthio groups, which process comprises reacting a compound of the general formula (II): ##STR2## wherein PA1 R.sub.1 to R.sub.5 are as defined in formula (I), with aminoguanidine bicarbonate in a mixture of a water-soluble solvent and polyphosphoric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.