ATE99T1 - PROCESS FOR THE PRODUCTION OF DIHYDRO-4,4-DIMETHYL-2,3-FURANDIONE. - Google Patents
PROCESS FOR THE PRODUCTION OF DIHYDRO-4,4-DIMETHYL-2,3-FURANDIONE.Info
- Publication number
- ATE99T1 ATE99T1 AT79101658T AT79101658T ATE99T1 AT E99 T1 ATE99 T1 AT E99T1 AT 79101658 T AT79101658 T AT 79101658T AT 79101658 T AT79101658 T AT 79101658T AT E99 T1 ATE99 T1 AT E99T1
- Authority
- AT
- Austria
- Prior art keywords
- dimethyl
- dihydro
- furandione
- production
- metal hypochlorite
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/60—Two oxygen atoms, e.g. succinic anhydride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Furan Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for producing dihydro-4,4-dimethyl-2,3-furandione by oxidizing dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone with a solid alkali metal hypochlorite or alkaline earth metal hypochlorite in an organic phase is disclosed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH588378 | 1978-05-30 | ||
EP79101658A EP0006156B1 (en) | 1978-05-30 | 1979-05-30 | A process for the preparation of dihydro-4,4-dimethyl-2,3-furandion |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE99T1 true ATE99T1 (en) | 1981-07-15 |
Family
ID=4300917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT79101658T ATE99T1 (en) | 1978-05-30 | 1979-05-30 | PROCESS FOR THE PRODUCTION OF DIHYDRO-4,4-DIMETHYL-2,3-FURANDIONE. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4225506A (en) |
EP (1) | EP0006156B1 (en) |
JP (1) | JPS54160363A (en) |
AT (1) | ATE99T1 (en) |
DE (1) | DE2960443D1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0050721A1 (en) * | 1980-10-28 | 1982-05-05 | F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft | Process for preparing dihydro-4,4-dimethyl-2,3 furan-dione |
ATE34744T1 (en) * | 1982-02-12 | 1988-06-15 | Hoffmann La Roche | PROCESS FOR PRODUCTION OF KETOPANTOLACTONE. |
DE3229026A1 (en) * | 1982-08-04 | 1984-02-09 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING 4,4-DIMETHYL-TETRAHYDROFURAN-2,3-DION |
DE3242560A1 (en) * | 1982-11-18 | 1984-05-24 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING DIHYDRO-4,4-DIMETHYL-2,3-FURANDION |
US6174498B1 (en) | 1991-10-28 | 2001-01-16 | Us Filter/Rj Environmental, Inc. | Odor control system |
WO2003091235A1 (en) * | 2002-04-25 | 2003-11-06 | Dsm Ip Assets B.V. | Manufacture of ketopantolactone |
US20060185517A1 (en) * | 2005-02-22 | 2006-08-24 | Nagel Daniel J | Multi-stage odor scrubber |
RU2461554C1 (en) * | 2011-07-19 | 2012-09-20 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ НАУКИ ИНСТИТУТ ОРГАНИЧЕСКОЙ ХИМИИ им. Н.Д. ЗЕЛИНСКОГО РОССИЙСКОЙ АКАДЕМИИ НАУК (ИОХ РАН) | Method of producing ketopantolactone |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD32628A (en) * | ||||
DD37505A (en) * | ||||
DD41651A (en) * | ||||
DE1033652B (en) * | 1954-09-09 | 1958-07-10 | Upjohn Co | Process for the resolution of racemic ª ‡ -oxy-ª ‰, ª ‰ -dimethyl-ª † -butyrolactone into its d (-) - and 1 (+) - stereomers |
CH468997A (en) * | 1965-04-23 | 1969-02-28 | Hoffmann La Roche | Process for the resolution of a racemic mixture into the optical antipodes |
GB1183387A (en) * | 1966-07-19 | 1970-03-04 | Delmar Chem | Resolution of Pantolactone |
DK134937C (en) * | 1974-01-30 | 1977-07-11 | Basf Ag | PROCEDURE FOR PANTOLACTONE RACEMATIC DECOMPOSITION |
US3996259A (en) * | 1975-11-06 | 1976-12-07 | The Dow Chemical Company | Oxidation of organic compounds by aqueous hypohalites using phase transfer catalysis |
US4062868A (en) * | 1977-02-23 | 1977-12-13 | Hoffmann-La Roche Inc. | Synthesis of biotin |
-
1979
- 1979-05-14 US US06/038,760 patent/US4225506A/en not_active Expired - Lifetime
- 1979-05-28 JP JP6511079A patent/JPS54160363A/en active Pending
- 1979-05-30 AT AT79101658T patent/ATE99T1/en not_active IP Right Cessation
- 1979-05-30 EP EP79101658A patent/EP0006156B1/en not_active Expired
- 1979-05-30 DE DE7979101658T patent/DE2960443D1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4225506A (en) | 1980-09-30 |
DE2960443D1 (en) | 1981-10-08 |
EP0006156A1 (en) | 1980-01-09 |
EP0006156B1 (en) | 1981-07-01 |
JPS54160363A (en) | 1979-12-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REN | Ceased due to non-payment of the annual fee |