GB833957A - New ª‡-keto-ª‰-cycloalkanoyl-ª†-halogenomethyl-ª†-lactone compounds and their preparation - Google Patents
New ª‡-keto-ª‰-cycloalkanoyl-ª†-halogenomethyl-ª†-lactone compounds and their preparationInfo
- Publication number
- GB833957A GB833957A GB1112258A GB1112258A GB833957A GB 833957 A GB833957 A GB 833957A GB 1112258 A GB1112258 A GB 1112258A GB 1112258 A GB1112258 A GB 1112258A GB 833957 A GB833957 A GB 833957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyruvate
- ethyl
- general formula
- bromine
- halogenomethyl
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/60—Two oxygen atoms, e.g. succinic anhydride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises a -keto-b -cycloalkanol-g -halogenomethyl-g -lactones of the general formula <FORM:0833957/IV (b)/1> \sX <FORM:0833957/IV (b)/2> (wherein R is alicyclic radical with 3 to 8 nuclear carbon atoms which may be substituted by one or more lower alkyl groups and may have one unsaturated double bond in the nucleus, X is a bromine or chlorine atom, Y is a hydrogen, bromine or chlorine atom, and X and Y are the same when representing bromine or chlorine atoms), and the preparation thereof by reacting a cycloalkanoyl-pyruvic ester of the general formula R-CO-CH2-CO-COOR1 (wherein R1 is a lower alkyl radical) with a halogeno acetaldehyde of the general formula YX2C.CHO at temperatures not exceeding room temperature, and preferably between 0 DEG C. and 10 DEG C. The term lower means that the alkyl groups have 1 to 5 carbon atoms. Ethyl b -methylcyclopropanoyl pyruvate is made by condensing acetyl-methylcyclopropane with diethyl oxalate in the p presence of sodium methoxide. Similarly made are ethyl b -(2.2-dimethyl - cyclopropanoyl) - pyruvate and the sodium enolate of ethyl b -cyclo-hexanoyl pyruvate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1112258A GB833957A (en) | 1958-04-08 | 1958-04-08 | New ª‡-keto-ª‰-cycloalkanoyl-ª†-halogenomethyl-ª†-lactone compounds and their preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1112258A GB833957A (en) | 1958-04-08 | 1958-04-08 | New ª‡-keto-ª‰-cycloalkanoyl-ª†-halogenomethyl-ª†-lactone compounds and their preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB833957A true GB833957A (en) | 1960-05-04 |
Family
ID=9980438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1112258A Expired GB833957A (en) | 1958-04-08 | 1958-04-08 | New ª‡-keto-ª‰-cycloalkanoyl-ª†-halogenomethyl-ª†-lactone compounds and their preparation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB833957A (en) |
-
1958
- 1958-04-08 GB GB1112258A patent/GB833957A/en not_active Expired
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