Process for preparing alkoxytriazolinones
US6248900A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2000 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | May 23, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C281/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing alkoxytriazolinones of general formula (1): ##STR1## in which R.sup.1 and R.sup.2 independently represent an alkyl group, an aryl group, an arylalkyl group or cycloalkyl group. The alkoxytriazolinones are prepared by reacting, in a first stage, water-dissolved iminocarboxylic acid diesters in the presence of a mineral acid or by reacting a mixture of water with a water-miscible polar organic solvent and a carboxylic acid ester, yielding hydrazine carboxylic acid ester; and in a second stage, by further reacting the thus obtained reaction product with an amine, a polar organic solvent or mixtures thereof in the presence of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.