Process for manufacturing heterocyclic compounds
US3935232A · kind A · utility
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Key dates
| Filing date | Oct 11, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Oct 11, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the manufacture of the heterocyclic compounds of the formula: ##SPC1## Wherein R is a hydrogen atom or a hydrocarbon radical, which comprises decarboxylating and dinitrating a compound of the formula: ##SPC2## Wherein R has the meaning stated above, and finally hydrolysing off the acyl group, and the use of the said heterocyclic compounds as diazo components in the production of azo dyestuffs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.