Process for producing &bgr;-carotene
US6355841B1 · kind B1 · utility
1Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Oct 10, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are disclosed a process for producing a sulfon derivative of formula (1): whereinAr represents an aryl group which may be substituted,R represents a lower alkyl group and the wavy line depicted by  indicates a single bond and stereochemistry relating to a double bond bound therewith is E or Z or a mixture thereof,which process is characterized by reacting an aldehyde derivative of formula (2): with phosphonium salt of formula (3): in the presence of a base; a sulfone derivative of formula (1) and a process for producing a &bgr;-carotene using sulfone derivative of formula (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.