2-(.omega.-alkoxycarbonyl alkanoyl)-4-butanolide
US6222049A · kind A · utility
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2References
6Claims
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Key dates
| Filing date | Jun 23, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/377
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2-(.omega.-alkoxycarbonyl alkanoyl)-4-butanolide is produced with a high selectivity and yield through condensation reaction of Y-butyrolactone with a readily available, low-price dicarboxylate as represented by the following general formula: EQU ROOC(CH.sub.2).sub.n COOR wherein n denotes an integer of 8-13, and R denotes an alkyl group or an alkenyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.