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
Application number
GB19731/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Union Carbide CorpfiledCriticalUnion Carbide Corp
Publication of GB892785ApublicationCriticalpatent/GB892785A/en
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
Landscapes
Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Hydrogenated Pyridines
(AREA)
Abstract
Alkyl-substituted e -caprolactams are prepared by reacting an alkyl substituted e -caprolactone of formula <FORM:0892785/IV (b)/1> where R represents a hydrogen atom or an alkyl group containing 1 to 8 carbon atoms, at least one of the R's being an alkyl group, with aqueous ammonia in a temperature range of 300 DEG C. to 475 DEG C. and under superatmospheric pressures. Caprolactones suitable are listed and examples describe the methyl, dimethyl and secondary e -caprolactams. The products being extracted with chloroform and fractionally distilled.
GB19731/60A1959-06-081960-06-03Improvements in and relating to the production of epsilon-caprolactam
ExpiredGB892785A
(en)