Cyclic urea compounds and preparation thereof
US7186828B2 · kind B2 · utility
7Cited by
4References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Jan 19, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing cyclic urea compounds from at least an activated carbamic acid derivative containing an unprotected primary or secondary amine function, includes a cyclization step which consists in a reaction between the primary or secondary amine function and the carbamic acid function of the carbamic acid derivative(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.