ES251214A1 - Procedure for the preparation of unsaturated ketones (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for the preparation of unsaturated ketones (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES251214A1
ES251214A1 ES0251214A ES251214A ES251214A1 ES 251214 A1 ES251214 A1 ES 251214A1 ES 0251214 A ES0251214 A ES 0251214A ES 251214 A ES251214 A ES 251214A ES 251214 A1 ES251214 A1 ES 251214A1
Authority
ES
Spain
Prior art keywords
radical
translation
machine
legally binding
google translate
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
ES0251214A
Other languages
Spanish (es)
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of ES251214A1 publication Critical patent/ES251214A1/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
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
    • C07C45/513—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being an etherified hydroxyl group
    • 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
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
    • C07C45/515—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being an acetalised, ketalised hemi-acetalised, or hemi-ketalised hydroxyl group
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/20—Unsaturated compounds containing keto groups bound to acyclic carbon atoms
    • C07C49/203—Unsaturated compounds containing keto groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • 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

Process for the manufacture of unsaturated ketones, which comprises reacting a propargyl alcohol represented by the general formula ** (See formula) ** in which R1 represents an alkyl radical having one to five carbon atoms or the phenyl radical, R2 represents the methyl radical, R1 and R2 taken together represent a tetramethylene or pentamethylene radical and each R represents hydrogen or the methyl radical, with a ketal represented by the general formula ** (See formula) ** or an enol ether represented by the general formula ** (See formula) ** in which R3 represents hydrogen, a lower alkyl radical or lower alkenyl, R4 and R5 represent a lower alkyl radical, and R3 and R4 taken together represent a polymethylene bridge, in the presence of an acidic condensation agent, and if desired after isomerization, subjecting the reaction product to cyclization by treatment with acid. (Machine-translation by Google Translate, not legally binding)
ES0251214A 1958-12-19 1959-07-31 Procedure for the preparation of unsaturated ketones (Machine-translation by Google Translate, not legally binding) Expired ES251214A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6248958A CH373034A (en) 1958-12-19 1958-12-19 Process for the production of unsaturated ketones

Publications (1)

Publication Number Publication Date
ES251214A1 true ES251214A1 (en) 1960-01-16

Family

ID=4524330

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0251214A Expired ES251214A1 (en) 1958-12-19 1959-07-31 Procedure for the preparation of unsaturated ketones (Machine-translation by Google Translate, not legally binding)

Country Status (2)

Country Link
CH (1) CH373034A (en)
ES (1) ES251214A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113021A (en) * 1989-09-21 1992-05-12 Givaudan Corporation Process for the manufacture of a mixture of α- and β-irone

Also Published As

Publication number Publication date
CH373034A (en) 1963-11-15

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