GB930225A - Method of producing vitamin a acid esters - Google Patents

Method of producing vitamin a acid esters

Info

Publication number
GB930225A
GB930225A GB33055/61A GB3305561A GB930225A GB 930225 A GB930225 A GB 930225A GB 33055/61 A GB33055/61 A GB 33055/61A GB 3305561 A GB3305561 A GB 3305561A GB 930225 A GB930225 A GB 930225A
Authority
GB
United Kingdom
Prior art keywords
solvent
sulphate
sodium
vitamin
acid
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
GB33055/61A
Inventor
Shigeya Saijo
Kiyoshi Ohizumi
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
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
Priority to US136506A priority Critical patent/US3187027A/en
Priority to DES75674A priority patent/DE1156799B/en
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to GB33055/61A priority patent/GB930225A/en
Priority to FR873228A priority patent/FR1308624A/en
Publication of GB930225A publication Critical patent/GB930225A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C403/00—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
    • C07C403/20—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by carboxyl groups or halides, anhydrides, or (thio)esters thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/16—Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated

Landscapes

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

Abstract

Esters of vitamin A acid are produced by treating vitamin A acid with a di- (methyl or ethyl) sulphate and an alkaline compound chosen from hydroxides, carbonates, and bicarbonates of alkali metals and alkaline earth metals in a hydrocarbon solvent and recovering the resultant methyl or ethyl ester from the solvent. Specified alkalis are sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium carbamate, potassium carbonate, sodium bicarbonate and potassium bicarbonate. The solvent may be petroleum ether, petroleum benzine, benzene, toluene, xylene, n. hexane, or cyclohexane. The sulphate and the alkali are preferably used in considerable molecular excess. The ester solution is dried over anhydrous sodium sulphate and then the pure alkyl ester obtained by partial evaporation of the solvent and crystallisation.
GB33055/61A 1961-09-07 1961-09-14 Method of producing vitamin a acid esters Expired GB930225A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US136506A US3187027A (en) 1961-09-07 1961-09-07 Method of producing vitamin a acid esters
DES75674A DE1156799B (en) 1961-09-08 1961-09-08 Process for the production of vitamin A acid esters
GB33055/61A GB930225A (en) 1961-09-14 1961-09-14 Method of producing vitamin a acid esters
FR873228A FR1308624A (en) 1961-09-14 1961-09-14 Process for the production of alpha vitamin acid esters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33055/61A GB930225A (en) 1961-09-14 1961-09-14 Method of producing vitamin a acid esters

Publications (1)

Publication Number Publication Date
GB930225A true GB930225A (en) 1963-07-03

Family

ID=10347936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33055/61A Expired GB930225A (en) 1961-09-07 1961-09-14 Method of producing vitamin a acid esters

Country Status (1)

Country Link
GB (1) GB930225A (en)

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