GB790451A - Stable dimethylhaloformylcyclopentanones - Google Patents
Stable dimethylhaloformylcyclopentanonesInfo
- Publication number
- GB790451A GB790451A GB7868/56A GB786856A GB790451A GB 790451 A GB790451 A GB 790451A GB 7868/56 A GB7868/56 A GB 7868/56A GB 786856 A GB786856 A GB 786856A GB 790451 A GB790451 A GB 790451A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon atoms
- dimethyl
- tertiary amines
- chloride
- give
- 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
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/26—Chemical tanning by organic agents using other organic substances, containing halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises dimethyl-halo-formyl cyclopentanones of the formula: <FORM:0790451/IV (b)/1> where X is chlorine or bromine, and a method for preparing them by the action of tertiary amines containing not more than 20 carbon atoms on dimethyl adipoyl bromide or chloride. Many tertiary amines are suitable, especially trialkylamines of 3+20 carbon atoms, aryldialkylamines of 8-20 carbon atoms, and heterocyclic amines of 5-20 carbon atoms. In an example a : a 1-dimethyl adipic acid is treated with thionyl chloride to give the acid chloride; followed by mixing the product with triethylamine, with some cooling, to give 2 : 5-dimethyl-2-chloroformylcyclopentanone; the bromoformyl derivative may be obtained similarly; other tertiary amines which may be employed include octyldimethylamine, methyl ethyl pentylamine, propylbutylaniline dimethylnaphthylamine, benzylmethylaniline, pyridine, quinoline, N-methylpyrrolidine, N - ethylpiperidine and N-methyl morpholine.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US790451XA | 1955-03-28 | 1955-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB790451A true GB790451A (en) | 1958-02-12 |
Family
ID=22148069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7868/56A Expired GB790451A (en) | 1955-03-28 | 1956-03-13 | Stable dimethylhaloformylcyclopentanones |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB790451A (en) |
-
1956
- 1956-03-13 GB GB7868/56A patent/GB790451A/en not_active Expired
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