Phenylimidazolidine preparation process
US6107488A · kind A · utility
33Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Jun 10, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A subject of the invention is a preparation process for the products of formula (I): ##STR1## in which R.sub.1 and R.sub.2 represent in particular hydrogen, cyano, halogen or amino,R.sub.3 represents in particular hydrogen or hydroxyl alkyl, R.sub.4 and R.sub.5 represent in particular optionally substituted alkyl, X and y represent oxygen or sulphur, characterized in that a product of formula (A): ##STR2## is prepared in which W represents a halogen atom or a hydantoin derivative, which is subjected to various reactions in order to obtain the products of formula (I), all their isomers and their salts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.