US4310465A
Expired / Lapsed
US
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Synthesis of vitamin E and quinone intermediates
Assignee: DSM Nutritional Products LLC
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Filing: 1979-12-17
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Granted: 1982-01-12
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Expires: 1999-12-17
Abstract
Abstract A synthesis of Vitamin E has the condensation of 2,4-pentanediene and 1,2-epoxy-2,6,10,14-tetramethylpentadecane including intermediates in this synthesis which uses base catalyzed condensations of aliphatic compounds to construct the Vitamin E molecule from aliphatic precursors.
Inventors
- 👤 Gary L. Olson
- 👤 Gabriel Saucy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:08
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/04; C07C; C07C37/00; C07C37/50; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C46/00; C07C46/02; C07C46/06; C07C50/00; C07C50/26; C07C50/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A process for producing a compound of the formula ##STR25## wherein R is ##STR26## comprising oxidizing a compound of the formula ##STR27## wherein R is as above in the presence of a salt of the formula: ##STR28## in an inert organic solvent medium wherein R 11 , R 12 and R 13 are alkyl containing from 1 to 20 carbon atoms and R 14 is alkyl containing from 8 to 20 carbon atoms.
Claim 2
Dependent Claim
73 words
A process for producing a compound of the formula ##STR25## wherein R is ##STR26## comprising oxidizing a compound of the formula ##STR27## wherein R is as above in the presence of a salt of the formula: ##STR28## in an inert organic solvent medium wherein R 11 , R 12 and R 13 are alkyl containing from 1 to 20 carbon atoms and R 14 is alkyl containing from 8 to 20 carbon atoms.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said salt is bis[tri(n-decyl)monomethyl ammonium]nitrosodisulfonate.
Claim 4
Dependent Claim
96 words
The process for producing a compound of the formula ##STR29## wherein R is ##STR30## comprising oxidizing a compound of the formula ##STR31## wherein R is as above with a compound of the formula: ##STR32## wherein M is an alkali metal; in the presence of 0.01-5.0 equivalents of a quaternary ammonium salt of the formula: ##STR33## wherein R 11 , R 12 and R 13 are alkyl containing from 1 to 20 carbon atoms and R 14 is alkyl containing from 8 to 20 carbon atoms and Y is halogen in a two phase aqueous-organic solvent medium.
Claim 5
Dependent Claim
96 words
The process for producing a compound of the formula ##STR29## wherein R is ##STR30## comprising oxidizing a compound of the formula ##STR31## wherein R is as above with a compound of the formula: ##STR32## wherein M is an alkali metal; in the presence of 0.01-5.0 equivalents of a quaternary ammonium salt of the formula: ##STR33## wherein R 11 , R 12 and R 13 are alkyl containing from 1 to 20 carbon atoms and R 14 is alkyl containing from 8 to 20 carbon atoms and Y is halogen in a two phase aqueous-organic solvent medium.
Claim 6
Dependent Claim
14 words
The process of claim 3 wherein said quaternary ammonium salt is tri(n-decyl)monomethyl ammonium chloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |