DK116726B - Process for cleavage of racemic α-hydroxy-β, β-dimethyl-γ-butyrolactone in the optically active antipodes. - Google Patents

Process for cleavage of racemic α-hydroxy-β, β-dimethyl-γ-butyrolactone in the optically active antipodes.

Info

Publication number
DK116726B
DK116726B DK207866AA DK207866A DK116726B DK 116726 B DK116726 B DK 116726B DK 207866A A DK207866A A DK 207866AA DK 207866 A DK207866 A DK 207866A DK 116726 B DK116726 B DK 116726B
Authority
DK
Denmark
Prior art keywords
butyrolactone
racemic
cleavage
hydroxy
dimethyl
Prior art date
Application number
DK207866AA
Other languages
Danish (da)
Inventor
Hoffmann La Roche & Co Ag F
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
Publication of DK116726B publication Critical patent/DK116726B/en

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
    • C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member 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
    • C07D307/32—Oxygen atoms
    • C07D307/33—Oxygen atoms in position 2, the oxygen atom being in its keto or unsubstituted enol form
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00—Systems containing at least three condensed rings
    • C07C2603/02—Ortho- or ortho- and peri-condensed systems
    • C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
    • C07C2603/22—Ortho- or ortho- and peri-condensed systems containing three rings containing only six-membered rings
    • C07C2603/26—Phenanthrenes; Hydrogenated phenanthrenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Epoxy Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
DK207866AA 1965-04-23 1966-04-22 Process for cleavage of racemic α-hydroxy-β, β-dimethyl-γ-butyrolactone in the optically active antipodes. DK116726B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH570365A CH468997A (en) 1965-04-23 1965-04-23 Process for the resolution of a racemic mixture into the optical antipodes

Publications (1)

Publication Number Publication Date
DK116726B true DK116726B (en) 1970-02-09

Family

ID=4297967

Family Applications (1)

Application Number Title Priority Date Filing Date
DK207866AA DK116726B (en) 1965-04-23 1966-04-22 Process for cleavage of racemic α-hydroxy-β, β-dimethyl-γ-butyrolactone in the optically active antipodes.

Country Status (9)

Country Link
BE (1) BE679805A (en)
BR (1) BR6678826D0 (en)
CH (1) CH468997A (en)
DE (1) DE1568755A1 (en)
DK (1) DK116726B (en)
ES (1) ES325859A1 (en)
GB (1) GB1083076A (en)
NL (1) NL153540B (en)
YU (1) YU77366A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2809179A1 (en) * 1978-03-03 1979-09-13 Basf Ag METHOD OF EXTRACTION OF PANTOLACTONE FROM ITS AQUATIC SOLUTIONS
US4225506A (en) * 1978-05-30 1980-09-30 Hoffmann-La Roche Inc. Process for manufacturing a diketone
CN111499602B (en) * 2020-05-14 2022-06-07 安徽泰格生物科技有限公司 Method for extracting D-pantolactone from DL-pantolactone split liquid by calcium salt method
CN112457181B (en) * 2020-12-11 2023-08-29 黄冈美丰化工科技有限公司 Synthesis method of D-calcium pantothenate

Also Published As

Publication number Publication date
NL153540B (en) 1977-06-15
YU77366A (en) 1978-02-28
DE1568755A1 (en) 1970-03-05
CH468997A (en) 1969-02-28
BE679805A (en) 1966-10-21
ES325859A1 (en) 1967-07-01
NL6605421A (en) 1966-10-24
GB1083076A (en) 1967-09-13
BR6678826D0 (en) 1973-09-18

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