GB895088A - Improvements in and relating to the production of epsilon-caprolactam - Google Patents
Improvements in and relating to the production of epsilon-caprolactamInfo
- Publication number
- GB895088A GB895088A GB19734/60A GB1973460A GB895088A GB 895088 A GB895088 A GB 895088A GB 19734/60 A GB19734/60 A GB 19734/60A GB 1973460 A GB1973460 A GB 1973460A GB 895088 A GB895088 A GB 895088A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caprolactam
- epsilon
- relating
- production
- water
- 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
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/02—Preparation of lactams
- C07D201/08—Preparation of lactams from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D223/00—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom
- C07D223/02—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings
- C07D223/06—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings 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
- C07D223/08—Oxygen atoms
- C07D223/10—Oxygen atoms attached in position 2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
e -Caprolactams of formula <FORM:0895088/IV (b)/1> where R represents hydrogen or an alkyl group containing 1 to 6 carbon atoms, are prepared by heating the corresponding e -caprolactone with an aqueous solution containing a compound R-NH2, in a temperature range Tc to Tc+ 100 DEG C. where Tc is the critical temperature of water, at a pressure above the critical pressure of water. The reaction may be batchwise or continuous and the product is extracted with chloroform. Examples describe the preparation of e -caprolactam and the n-butyl and methyl caprolactams.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US895088XA | 1959-06-08 | 1959-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895088A true GB895088A (en) | 1962-05-02 |
Family
ID=22218029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19734/60A Expired GB895088A (en) | 1959-06-08 | 1960-06-03 | Improvements in and relating to the production of epsilon-caprolactam |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB895088A (en) |
-
1960
- 1960-06-03 GB GB19734/60A patent/GB895088A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1456689A (en) | Process for preparing oxathiazinones | |
| GB989193A (en) | Process for the production of heterocyclic nitrogen compounds | |
| GB895088A (en) | Improvements in and relating to the production of epsilon-caprolactam | |
| JPS5681570A (en) | Manufacture of 1hh1*2*44triazole | |
| ES444112A1 (en) | Process for the preparation of steroidal spirolactones and intermediates | |
| GB810165A (en) | Process for the preparation of lactams | |
| GB948882A (en) | Process for preparing borazoles | |
| GB973927A (en) | Thiazolosteroids and production thereof | |
| GB906802A (en) | Improvements in or relating to pyrrolenine bases | |
| GB742450A (en) | Improvements in or relating to piperazine derivatives and process of preparing the same | |
| GB981213A (en) | Improvements in or relating to cyclic phosphorus and nitrogen-containing compounds | |
| GB749810A (en) | New derivatives of demethylcolchicine | |
| GB799066A (en) | Process for the manufacture of isoxazolidone compounds | |
| GB964392A (en) | Modified polyacrylates and process for preparing them | |
| GB882843A (en) | Glucuronic acid derivatives useful as intermediates in the production of antibacterials, and the production of said derivatives | |
| GB895681A (en) | Improvements in the preparation of glycolonitrile | |
| GB1055060A (en) | Process for producing alpha hydroxy-glutaronitrile and its alkyl-substitute derivatives | |
| GB888498A (en) | Improvements in and relating to the production of epsilon-caprolactam | |
| GB895994A (en) | Process of producing pyrazolone derivatives | |
| GB981452A (en) | Method for the preparation of optical sensitizers | |
| GB830563A (en) | Process for the production of phenothiazine derivatives | |
| GB788383A (en) | Improvements in or relating to beryllium hydroxide | |
| GB927613A (en) | Manufacture of 2-ยช -methoxyethylpyridine | |
| GB639218A (en) | Process for the preparation of diaminotriazines | |
| GB1001830A (en) | Novel indeno-[5,4-e]-azulene derivatives and processes for the preparation thereof |