GB677442A - Process for the manufacture of substituted compounds derived from naphthalene - Google Patents
Process for the manufacture of substituted compounds derived from naphthaleneInfo
- 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
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.
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) |
-
1949
- 1949-09-22 GB GB24408/49A patent/GB677442A/en not_active Expired
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