GB814226A - An improved process for the preparation of ª‰-ionone - Google Patents

An improved process for the preparation of ª‰-ionone

Info

Publication number
GB814226A
GB814226A GB8772/57A GB877257A GB814226A GB 814226 A GB814226 A GB 814226A GB 8772/57 A GB8772/57 A GB 8772/57A GB 877257 A GB877257 A GB 877257A GB 814226 A GB814226 A GB 814226A
Authority
GB
United Kingdom
Prior art keywords
ionone
pseudoionone
stirring
extracted
reaction mixture
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
GB8772/57A
Inventor
Holla Janardhan Venkat Krishna
Balawant Narayan Joshi
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.)
Council of Scientific and Industrial Research CSIR
Original Assignee
Council of Scientific and Industrial Research CSIR
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 Council of Scientific and Industrial Research CSIR filed Critical Council of Scientific and Industrial Research CSIR
Publication of GB814226A publication Critical patent/GB814226A/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
    • C07C403/16—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 not being part of —CHO groups
    • 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

b -Ionone is prepared by cyclising pseudoionone with acidic reagents at a temperature below 15 DEG C. and with stirring of the reaction mixture after the addition of the cyclising agent, the temperature of the reaction mixture being kept below 15 DEG C. until all the b -ionone is removed. In examples pseudoionone is added with stirring to a mixture of concentrated sulphuric acid and glacial acetic acid at 10-15 DEG C. stirred for 5-10 minutes at 10-15 DEG C. and then poured into broken ice and extracted with ether or benzene, the b -ionone being extracted in the solvent layer and purified by steam distillation.
GB8772/57A 1956-09-29 1957-03-18 An improved process for the preparation of ª‰-ionone Expired GB814226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN814226X 1956-09-29

Publications (1)

Publication Number Publication Date
GB814226A true GB814226A (en) 1959-06-03

Family

ID=11076633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8772/57A Expired GB814226A (en) 1956-09-29 1957-03-18 An improved process for the preparation of ª‰-ionone

Country Status (1)

Country Link
GB (1) GB814226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344192A (en) * 1963-10-08 1967-09-26 Naarden Chem Fab Process for the preparation of beta-ionone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344192A (en) * 1963-10-08 1967-09-26 Naarden Chem Fab Process for the preparation of beta-ionone

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