.alpha.-(.omega.-cyanoalkanoyl)-.gamma.-butyrolactone and method for producing the same
US5099036A · kind A · utility
4Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | Mar 11, 1991 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Mar 11, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/33
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are .alpha.-(.omega.-Cyanoalkanoyl)-.gamma.-butyrolactone represented by the formula: ##STR1## wherein n represents an integer of 7 to 11, and a method for producing the same, which comprises reacting .omega.-cyano fatty acid ester represented by the formula: EQU NC--(CH.sub.2).sub.n --COOR (II) wherein R represents an alkyl group having 1 to 4 carbon atoms and n has the same meaning as in the above, with .gamma.-butyrolactone in the presence of alkali metal alcoholate represented by the formula: EQU R'OM (III) wherein R' represents an alkyl group having 1 to 4 carbon atoms and M represents an alkali metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.