ATE99T1 - Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion. - Google Patents

Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion.

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
Application number
AT79101658T
Other languages
English (en)
Inventor
Max Schmid
Original Assignee
Hoffmann La Roche
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoffmann La Roche filed Critical Hoffmann La Roche
Application granted granted Critical
Publication of ATE99T1 publication Critical patent/ATE99T1/de

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)
AT79101658T 1978-05-30 1979-05-30 Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion. ATE99T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH588378 1978-05-30
EP79101658A EP0006156B1 (de) 1978-05-30 1979-05-30 Verfahren zur Herstellung von Dihydro-4,4-dimethyl-2,3-furandion

Publications (1)

Publication Number Publication Date
ATE99T1 true ATE99T1 (de) 1981-07-15

Family

ID=4300917

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79101658T ATE99T1 (de) 1978-05-30 1979-05-30 Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion.

Country Status (5)

Country Link
US (1) US4225506A (de)
EP (1) EP0006156B1 (de)
JP (1) JPS54160363A (de)
AT (1) ATE99T1 (de)
DE (1) DE2960443D1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050721A1 (de) * 1980-10-28 1982-05-05 F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft Verfahren zur Herstellung von Dihydro-4,4-dimethyl-2,3-furandion
DE3376830D1 (en) * 1982-02-12 1988-07-07 Hoffmann La Roche Process for preparing ketopantolactone
DE3229026A1 (de) * 1982-08-04 1984-02-09 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von 4,4-dimethyl-tetrahydrofuran-2,3-dion
DE3242560A1 (de) * 1982-11-18 1984-05-24 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion
US6174498B1 (en) 1991-10-28 2001-01-16 Us Filter/Rj Environmental, Inc. Odor control system
CN1332956C (zh) * 2002-04-25 2007-08-22 Dsmip资产有限公司 酮基泛酸内酯的制备方法
US20060185517A1 (en) * 2005-02-22 2006-08-24 Nagel Daniel J Multi-stage odor scrubber
RU2461554C1 (ru) * 2011-07-19 2012-09-20 ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ НАУКИ ИНСТИТУТ ОРГАНИЧЕСКОЙ ХИМИИ им. Н.Д. ЗЕЛИНСКОГО РОССИЙСКОЙ АКАДЕМИИ НАУК (ИОХ РАН) Способ получения кетопантолактона

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD41651A (de) *
DD32628A (de) *
DD37505A (de) *
DE1033652B (de) * 1954-09-09 1958-07-10 Upjohn Co Verfahren zur Spaltung von racemischem ª‡-Oxy-ª‰, ª‰-dimethyl-ª†-butyrolacton in seine d(-)- und 1(+)-Stereomeren
CH468997A (de) * 1965-04-23 1969-02-28 Hoffmann La Roche Verfahren zur Aufspaltung eines racemischen Gemisches in die optischen Antipoden
GB1183387A (en) * 1966-07-19 1970-03-04 Delmar Chem Resolution of Pantolactone
DK134937C (da) * 1974-01-30 1977-07-11 Basf Ag Fremgangsmade til racematspaltning af pantolacton
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

Also Published As

Publication number Publication date
US4225506A (en) 1980-09-30
DE2960443D1 (en) 1981-10-08
EP0006156A1 (de) 1980-01-09
EP0006156B1 (de) 1981-07-01
JPS54160363A (en) 1979-12-19

Similar Documents

Publication Publication Date Title
ES495185A0 (es) Un metodo de obtener fructosaa partir de glucosa.
SE7710744L (sv) Sett att framstella xylos genom enzymatisk hydrolys av xylaner
ATE157400T1 (de) Fermentationsverfahren zur herstellung von 2-keto-l-gulonsäure
ATE99T1 (de) Verfahren zur herstellung von dihydro-4,4-dimethyl-2,3-furandion.
JPS53114601A (en) Voice recognition system
SE8401408D0 (sv) Lignosulfonatderivat
NO894359D0 (no) Kontinuerlig fremgangsmaate for fremstilling av alkalimetallperklorat.
ATE2685T1 (de) Herstellung von 2-keto-l-gulonsaeure.
JPS4834871A (de)
JPS52143289A (en) Production of 7-amino-cephem derivatives by filamentous fungi
IE772296L (en) Preparation of gamma-pyrones from substituted furans
ATE32718T1 (de) Verfahren zur herstellung von (s)glyceraldehydacetonid.
ATE22689T1 (de) Verfahren zur herstellung von dihydro-4,4dimethyl-2,3-furandion.
GB1103985A (en) Novel des-a-steroids
JPS5282774A (en) Decomposition of polyesters
KR850005836A (ko) 3-위치가 치환된 2(3h)-벤즈티아졸론의 제조방법
ATE12391T1 (de) Verfahren zur herstellung von tetronsaeure.
JPS5250000A (en) Method for producing fibrous alkali tianate
SE7907807L (sv) Forbettrar forfarande for framstellning av askorbinsyra
GB926804A (en) Production of glycerine
NO771133L (no) Fremgangsmåte for fremstilling av maursyre.
JPS5214917A (en) Constructing method of double shell tank
KR830004287A (ko) 1,3-디티올-2-일리덴 말로네이트의 제조방법
KR830004288A (ko) 1,3-디티올-2-일리덴 말론산 에스테르류의 제조방법
SE7713979L (sv) Sett att framstella en blandning av 2-ketogulonat och 2-ketoglukonat

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee