Method for preparing activated esters
US8314244B2 · kind B2 · utility
1Cited by
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11Claims
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Key dates
| Filing date | Dec 15, 2009 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Dec 15, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D401/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for preparing an activated ester of the formula (I), where R is a (C1-C6) alkyl, aryl, heteroaryl, cycloalkyl, or heterocycloalkyl group, and ALK is a (C1-C6) alkylene group, said method consisting of reacting the dicyclohexylamine P1 salt and the disuccinimidyl carbonate (DSC) in a solvent in which the dicyclohexylamine salt of the N-hydroxysuccinimide P2 is precipitated. The invention also relates to products of the formula P1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.