GB831366A - Improvements in and relating to new glutaconimides and their process of preparation - Google Patents
Improvements in and relating to new glutaconimides and their process of preparationInfo
- Publication number
- GB831366A GB831366A GB5735/58A GB573558A GB831366A GB 831366 A GB831366 A GB 831366A GB 5735/58 A GB5735/58 A GB 5735/58A GB 573558 A GB573558 A GB 573558A GB 831366 A GB831366 A GB 831366A
- Authority
- GB
- United Kingdom
- Prior art keywords
- preparation
- ester
- substituted
- glutaconimides
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
Abstract
The invention comprises: (a) substituted glutaconimides of the general formula <FORM:0831366/IV (b)/1> wherein R1 and R2 each represent an aryl or alkyl radical, R3 represents hydrogen or an alkyl or dialkylaminoalkyl radical, R4 hydrogen or an alkyl radical and R an alkyl or dialkylaminoalkyl radical; (b) the preparation of compounds (I) by condensing (preferably in an ether solvent medium in the presence of magnesium) a disubstituted cyanoacetyl chloride of the formula <FORM:0831366/IV (b)/2> with an ester of an unsubstituted or substituted malonic acid of the formula <FORM:0831366/IV (b)/3> cyclizing the resulting product into a substituted 4-hydroxyglutaconimide (I,R = R3 = H) and treating this with at least one alkylating agent to introduce R and also R3 when this is other than hydrogen; (c) the combination of process (b) with the preparation of the cyanoacetyl chloride by treating the corresponding acid with phosphorus pentachloride; (d) the combination of process (c) with the preparation of the acid by hydrolysis of an ester thereof; (e) the combination of process (d) with the preparation of the disubstituted cyanoacetic ester by condensing an ester of the monosubstituted cyanoacetic acid with a halide of the second substituent to be introduced, in the presence of sodium ethoxide. The substituted glutaconimides are useful as sedative, anticonvulsant and hypnotic agents.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR831366X | 1957-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB831366A true GB831366A (en) | 1960-03-30 |
Family
ID=9291779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5735/58A Expired GB831366A (en) | 1957-02-22 | 1958-02-21 | Improvements in and relating to new glutaconimides and their process of preparation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB831366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU639673B2 (en) * | 1987-04-02 | 1993-08-05 | Ipsco Inc. | Aluminium-manganese-iron stainless steel alloy |
-
1958
- 1958-02-21 GB GB5735/58A patent/GB831366A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU639673B2 (en) * | 1987-04-02 | 1993-08-05 | Ipsco Inc. | Aluminium-manganese-iron stainless steel alloy |
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