GB668604A - Method of making a vitamin a intermediate - Google Patents

Method of making a vitamin a intermediate

Info

Publication number
GB668604A
GB668604A GB17518/50A GB1751850A GB668604A GB 668604 A GB668604 A GB 668604A GB 17518/50 A GB17518/50 A GB 17518/50A GB 1751850 A GB1751850 A GB 1751850A GB 668604 A GB668604 A GB 668604A
Authority
GB
United Kingdom
Prior art keywords
ionylidene
ethanol
manganese dioxide
vitamin
making
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
GB17518/50A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB668604A publication Critical patent/GB668604A/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
    • C07C403/14—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 doubly-bound oxygen atoms
    • 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

Abstract

b -Ionylidene acetaldehyde is obtained by the oxidation of b -ionylidene-ethanol with manganese dioxide in an organic solvent, preferably chlorinated; the reaction takes place at room temperature or above. Quantities of manganese dioxide of 1/2 to twice the weight of the b -ionylidene ethanol may be used and synthetic MnO2 obtained for example by the action of potassium permanganate on manganous sulphate is preferred. An example is given.
GB17518/50A 1949-08-03 1950-07-13 Method of making a vitamin a intermediate Expired GB668604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US668604XA 1949-08-03 1949-08-03

Publications (1)

Publication Number Publication Date
GB668604A true GB668604A (en) 1952-03-19

Family

ID=22072179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17518/50A Expired GB668604A (en) 1949-08-03 1950-07-13 Method of making a vitamin a intermediate

Country Status (1)

Country Link
GB (1) GB668604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2717502A1 (en) * 1977-04-20 1978-10-26 Basf Ag CYCLOHEXENDER DERIVATIVES AND METHOD FOR MANUFACTURING THEREOF

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2717502A1 (en) * 1977-04-20 1978-10-26 Basf Ag CYCLOHEXENDER DERIVATIVES AND METHOD FOR MANUFACTURING THEREOF

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