GB666993A - Process for preparing alpha-ionones - Google Patents

Process for preparing alpha-ionones

Info

Publication number
GB666993A
GB666993A GB31075/48A GB3107548A GB666993A GB 666993 A GB666993 A GB 666993A GB 31075/48 A GB31075/48 A GB 31075/48A GB 3107548 A GB3107548 A GB 3107548A GB 666993 A GB666993 A GB 666993A
Authority
GB
United Kingdom
Prior art keywords
ionones
ionone
pseudo
methyl
allyl
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
GB31075/48A
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.)
Givaudan SA
Original Assignee
L Givaudan and Co SA
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 L Givaudan and Co SA filed Critical L Givaudan and Co SA
Publication of GB666993A publication Critical patent/GB666993A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C403/00Derivatives 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
    • C07C403/24Derivatives 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 six-membered non-aromatic rings, e.g. beta-carotene
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C403/00Derivatives 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
    • C07C403/14Derivatives 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
    • C07C403/16Derivatives 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 not being part of —CHO groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00Systems containing only non-condensed rings
    • C07C2601/12Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/16Systems 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

a -Ionones are prepared by treating the corresponding pseudo-ionones with at least 1, for example 1 to about 1.1, molecular equivalent of boron trifluoride. The latter may be passed into the pseudo-ionone, which may be of lowgrade and ketone content, at about -25 DEG to 30 DEG C., preferably at 0-5 DEG C., and in the presence of solvents such as benzene, toluene or carbon tetrachloride, until saturated, aqueous caustic alkali added, followed by solvent extraction and distillation. In examples, a -ionone is obtained from pseudo-ionone, a -methyl-ionones from pseudo-methyl-ionone obtained by condensing citrol and methyl ethyl ketone, and a -allyl-ionones from pseudo-allyl-ionone.
GB31075/48A 1948-02-05 1948-11-30 Process for preparing alpha-ionones Expired GB666993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US277981XA 1948-02-05 1948-02-05

Publications (1)

Publication Number Publication Date
GB666993A true GB666993A (en) 1952-02-20

Family

ID=21839845

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31075/48A Expired GB666993A (en) 1948-02-05 1948-11-30 Process for preparing alpha-ionones

Country Status (5)

Country Link
CH (1) CH277981A (en)
DE (1) DE812313C (en)
FR (1) FR975344A (en)
GB (1) GB666993A (en)
NL (1) NL69166C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550790A1 (en) * 1983-07-28 1985-02-22 Inst Khim Akademii Nauk PROCESS FOR THE PREPARATION OF 4-METHYLIONONE

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE931351C (en) * 1948-05-04 1955-08-08 Givaudan & Cie Sa Process for the production of isomeric 6-methyl-ª ‡ -ionons (ª ‡ -ions) by ring closure of 3-methyl pseudoionons
DE1028992B (en) * 1955-09-06 1958-04-30 Hoffmann La Roche Process for the production of unsaturated ketones
DE1045393B (en) * 1956-05-04 1958-12-04 Dragoco Gerberding Co Gmbh Process for the preparation of derivatives of the 1,1-dimethyloctahydronaphthalene series
DE1109677B (en) * 1958-08-01 1961-06-29 Hoffmann La Roche Process for the preparation of unsaturated ketones of the ionone type
DE1104504B (en) * 1958-12-17 1961-04-13 Hoffmann La Roche Process for the preparation of unsaturated cyclic ketones
DE1112736B (en) * 1959-01-16 1961-08-17 Hoffmann La Roche Process for the production of alicyclic ketones with valuable fragrance properties
DE1109679B (en) * 1959-03-20 1961-06-29 Hoffmann La Roche Process for the preparation of unsaturated cyclic ketones
DE1137008B (en) * 1961-03-11 1962-09-27 Basf Ag Process for the preparation of ionone compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550790A1 (en) * 1983-07-28 1985-02-22 Inst Khim Akademii Nauk PROCESS FOR THE PREPARATION OF 4-METHYLIONONE

Also Published As

Publication number Publication date
CH277981A (en) 1951-09-30
FR975344A (en) 1951-03-05
NL69166C (en)
DE812313C (en) 1951-08-27

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