GB445399A - Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor - Google Patents

Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor

Info

Publication number
GB445399A
GB445399A GB1576235A GB1576235A GB445399A GB 445399 A GB445399 A GB 445399A GB 1576235 A GB1576235 A GB 1576235A GB 1576235 A GB1576235 A GB 1576235A GB 445399 A GB445399 A GB 445399A
Authority
GB
United Kingdom
Prior art keywords
trans
optically active
hydroxycamphor
acid
dihalogen
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
GB1576235A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1576235A priority Critical patent/GB445399A/en
Publication of GB445399A publication Critical patent/GB445399A/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/385—Saturated compounds containing a keto group being part of a ring
    • C07C49/487—Saturated compounds containing a keto group being part of a ring containing hydroxy groups
    • C07C49/507—Saturated compounds containing a keto group being part of a ring containing hydroxy groups polycyclic
    • C07C49/513—Saturated compounds containing a keto group being part of a ring containing hydroxy groups polycyclic a keto group being part of a condensed ring system
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/673—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by change of size of the carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Optically-active trans-p -hydroxycamphor is prepared by heating an a -p -trans-dihalogencamphor with an organic acid and a salt thereof, and reacting the resulting a -halogen-p -acylhydroxycamphor with zinc powder and caustic alkali in an organic solvent. An example describes the treatment of a -p -dibromocamphor with anhydrous potassium acetate and glacial acetic acid to give a -bromo-p -acetoxycamphor, which is then heated with zinc powder and caustic alkali in alcohol. The acetic acid and its salt may be replaced by propionic acid or trichloroacetic acid and their respective salts, and the alcohol by acetone or benzene; and instead of the organic acid a previously made ester of the a -halogen-trans-p -hydroxycamphor may be employed. The use of a -p -dichlorocamphor or a -chloro-p -bromocamphor as starting material is referred to. The semicarbazone of the product is described.
GB1576235A 1935-05-30 1935-05-30 Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor Expired GB445399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1576235A GB445399A (en) 1935-05-30 1935-05-30 Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1576235A GB445399A (en) 1935-05-30 1935-05-30 Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor

Publications (1)

Publication Number Publication Date
GB445399A true GB445399A (en) 1936-04-08

Family

ID=10065008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1576235A Expired GB445399A (en) 1935-05-30 1935-05-30 Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor

Country Status (1)

Country Link
GB (1) GB445399A (en)

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