GB677442A - Process for the manufacture of substituted compounds derived from naphthalene - Google Patents

Process for the manufacture of substituted compounds derived from naphthalene

Info

Publication number
GB677442A
GB677442A GB24408/49A GB2440849A GB677442A GB 677442 A GB677442 A GB 677442A GB 24408/49 A GB24408/49 A GB 24408/49A GB 2440849 A GB2440849 A GB 2440849A GB 677442 A GB677442 A GB 677442A
Authority
GB
United Kingdom
Prior art keywords
tetralones
dihydronaphthalene
tetralone
give
naphthalene
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
GB24408/49A
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.)
Organon NV
Original Assignee
Organon NV
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 Organon NV filed Critical Organon NV
Publication of GB677442A publication Critical patent/GB677442A/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
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/753—Unsaturated compounds containing a keto groups being part of a ring containing ether groups, groups, groups, or groups
    • C07C49/755—Unsaturated compounds containing a keto groups being part of a ring containing ether groups, groups, groups, or groups a keto group being part of a condensed ring system with two or three rings, at least one ring being a six-membered aromatic ring
    • 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
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
    • C07C45/69—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by addition to carbon-to-carbon double or triple bonds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/753—Unsaturated compounds containing a keto groups being part of a ring containing ether groups, groups, groups, or groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

5 : 8-Dialkoxy-2-tetralones are prepared from benzoquinone and 2-alkoxylbutadiene by carrying out a diene synthesis in neutral medium to give a 6-alkoxy-tetrahydro-naphthaquinone, treating the latter with an alkylating agent in an alkaline medium to form a 1 : 4 : 6-trialkoxy - dihydronaphthalene and hydrolysing the latter with acid; the alkoxy groups have not more than five carbon atoms. In the example, 1 : 4 - diketo - 6 - methoxy - 1 : 4 : 5 : 8 : 9 : 10 - hexahydronaphthalene is made from quinone and 2-methoxybutadiene and is converted successively into 1 : 4 : 6-trimethoxy-5 : 8-dihydronaphthalene and 5 : 8-dimethoxy-2-tetralone. According to the Specification as open to inspection under Sect. 91, any substituent may be present in the 6-position that can be decomposed to give a keto group; the corresponding substituted butadiene is used as starting material. It is also stated that 5 : 8-diacyloxy-2-tetralones such as 5 : 8-diacetoxy-2-tetralone may be made by an analogous process. This subject-matter does not appear in the Specification as accepted.
GB24408/49A 1948-10-02 1949-09-22 Process for the manufacture of substituted compounds derived from naphthalene Expired GB677442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL677442X 1948-10-02

Publications (1)

Publication Number Publication Date
GB677442A true GB677442A (en) 1952-08-13

Family

ID=19802333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24408/49A Expired GB677442A (en) 1948-10-02 1949-09-22 Process for the manufacture of substituted compounds derived from naphthalene

Country Status (1)

Country Link
GB (1) GB677442A (en)

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