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GB1379874A - Process for the preparation of cyclopentenes - Google Patents

Process for the preparation of cyclopentenes

Info

Publication number
GB1379874A
GB1379874A GB1266573A GB1266573A GB1379874A GB 1379874 A GB1379874 A GB 1379874A GB 1266573 A GB1266573 A GB 1266573A GB 1266573 A GB1266573 A GB 1266573A GB 1379874 A GB1379874 A GB 1379874A
Authority
GB
United Kingdom
Prior art keywords
alkyl
formula
alkoxy
group
lower alkyl
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
GB1266573A
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 GB1379874A publication Critical patent/GB1379874A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C49/21—Unsaturated compounds containing keto groups bound to acyclic carbon atoms containing rings other than six-membered aromatic rings
    • 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
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00—Essential oils; Perfumes
    • C11B9/0026—Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring
    • C11B9/003—Essential oils; Perfumes compounds containing an alicyclic ring not condensed with another ring the ring containing less than six carbon atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fats And Perfumes (AREA)
  • Cosmetics (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1379874 Cyclopentene derivatives L GIVAUDAN & CIE SA 16 March 1973 [17 March 1972] 12665/73 Heading C2C [Also in Division A5] The invention comprises a process for preparing compounds of the formula where R<SP>1</SP> is H, OH, lower alkyl or lower alkoxy, R<SP>2</SP> is H, lower alkyl or lower alkylidene the broken line denotes an optional bond and the lower alkyl, alkoxy or alkylidene groups contain up to 6 carbon atoms by reacting 3 - isopropenyl - 1 - methyl - 2 - methylenecyclopentan-1-ol in the presence of an acid catalyst with a compound of the formula R<SP>5</SP>-CH = CR<SP>1</SP>-OR or where R is C 1-6 alkyl and R<SP>5</SP> is C 1-6 alkyl or C 2-6 alkenyl, and, if desired, catalytically hydrogenating the 3-isopropenyl group and/or oxidizing the aldehyde group to the carboxy group and optionally converting the carboxy group to a carboxylic acid alkyl ester. The invention further comprises compounds of the formula where R<SP>12</SP> is H, OH or C 1-6 alkoxy.
GB1266573A 1972-03-17 1973-03-16 Process for the preparation of cyclopentenes Expired GB1379874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH404072A CH565728A5 (en) 1972-03-17 1972-03-17

Publications (1)

Publication Number Publication Date
GB1379874A true GB1379874A (en) 1975-01-08

Family

ID=4268690

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266573A Expired GB1379874A (en) 1972-03-17 1973-03-16 Process for the preparation of cyclopentenes

Country Status (6)

Country Link
JP (2) JPS5422968B2 (en)
CH (1) CH565728A5 (en)
DE (2) DE2313017C3 (en)
FR (1) FR2176786B1 (en)
GB (1) GB1379874A (en)
NL (2) NL160800C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2513995C2 (en) * 1975-03-29 1984-04-12 Basf Ag, 6700 Ludwigshafen Cyclopentene derivatives
GB8813557D0 (en) * 1988-06-08 1988-07-13 James River Graphics Ltd Coating composition & coated paper
FR2735399B1 (en) * 1995-06-16 1997-07-25 Inst Francais Du Petrole NOVEL CATALYTIC COMPOSITION BASED ON TRANSITIONAL METAL COMPLEXES AND METHOD FOR THE HYDROGENATION OF UNSATURATED COMPOUNDS
US6187386B1 (en) * 1996-05-30 2001-02-13 Joseph W. Hundley Liquid sealant composition and method of using same

Also Published As

Publication number Publication date
FR2176786B1 (en) 1979-01-12
DE2313017A1 (en) 1973-09-27
DE2365939C3 (en) 1981-01-15
JPS4911850A (en) 1974-02-01
DE2365939B2 (en) 1980-05-08
JPS5440616B2 (en) 1979-12-04
JPS53109957A (en) 1978-09-26
NL7302559A (en) 1973-09-19
NL7904191A (en) 1979-09-28
JPS5422968B2 (en) 1979-08-10
DE2365939A1 (en) 1976-12-09
DE2313017B2 (en) 1979-07-12
NL160800B (en) 1979-07-16
NL160800C (en) 1979-12-17
CH565728A5 (en) 1975-08-29
DE2313017C3 (en) 1980-03-20
FR2176786A1 (en) 1973-11-02

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Legal Events

Date Code Title Description
PS Patent sealed
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee