DE3376830D1 - Process for preparing ketopantolactone - Google Patents

Process for preparing ketopantolactone

Info

Publication number
DE3376830D1
DE3376830D1 DE8383100055T DE3376830T DE3376830D1 DE 3376830 D1 DE3376830 D1 DE 3376830D1 DE 8383100055 T DE8383100055 T DE 8383100055T DE 3376830 T DE3376830 T DE 3376830T DE 3376830 D1 DE3376830 D1 DE 3376830D1
Authority
DE
Germany
Prior art keywords
ketopantolactone
preparing
pantolactone
oxygen
degree
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE8383100055T
Other languages
German (de)
English (en)
Inventor
Paul Dr Nosberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Application granted granted Critical
Publication of DE3376830D1 publication Critical patent/DE3376830D1/de
Expired legal-status Critical Current

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)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Furan Compounds (AREA)
DE8383100055T 1982-02-12 1983-01-05 Process for preparing ketopantolactone Expired DE3376830D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH88982 1982-02-12

Publications (1)

Publication Number Publication Date
DE3376830D1 true DE3376830D1 (en) 1988-07-07

Family

ID=4197541

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383100055T Expired DE3376830D1 (en) 1982-02-12 1983-01-05 Process for preparing ketopantolactone

Country Status (5)

Country Link
US (1) US4904805A (https=)
EP (1) EP0086322B1 (https=)
JP (1) JPS58148872A (https=)
AT (1) ATE34744T1 (https=)
DE (1) DE3376830D1 (https=)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1614195A (en) * 1923-03-05 1927-01-11 Firm Of C H Boehringer & Sohn Process for the manufacture of esters of oxy-acids
US1627091A (en) * 1923-03-05 1927-05-03 Boehringer Sohn Ingelheim Making keto and aldo aliphatic carboxylic acids
JPS4935353A (https=) * 1972-08-08 1974-04-01
DE2243583C3 (de) * 1972-09-05 1979-12-20 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung eines Kobaltmolybdat-Katalysators
DE2403042A1 (de) * 1973-02-05 1974-08-08 Allied Chem Verfahren zur herstellung von maleinsaeureanhydrid
JPS5946516B2 (ja) * 1977-12-22 1984-11-13 財団法人相模中央化学研究所 ケトパントイルラクトンの製造方法
US4225506A (en) * 1978-05-30 1980-09-30 Hoffmann-La Roche Inc. Process for manufacturing a diketone

Also Published As

Publication number Publication date
JPH057387B2 (https=) 1993-01-28
EP0086322B1 (de) 1988-06-01
JPS58148872A (ja) 1983-09-05
US4904805A (en) 1990-02-27
EP0086322A3 (en) 1984-08-15
EP0086322A2 (de) 1983-08-24
ATE34744T1 (de) 1988-06-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: F. HOFFMANN-LA ROCHE AG, BASEL, CH

8339 Ceased/non-payment of the annual fee