GB821982A - Manufacture of amides - Google Patents

Manufacture of amides

Info

Publication number
GB821982A
GB821982A GB2608157A GB2608157A GB821982A GB 821982 A GB821982 A GB 821982A GB 2608157 A GB2608157 A GB 2608157A GB 2608157 A GB2608157 A GB 2608157A GB 821982 A GB821982 A GB 821982A
Authority
GB
United Kingdom
Prior art keywords
lactone
ammonia
amides
vapour
manufacture
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
Application number
GB2608157A
Inventor
Frederick Keith Duxbury
Reginald John William Reynolds
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2608157A priority Critical patent/GB821982A/en
Publication of GB821982A publication Critical patent/GB821982A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Pyrrole Compounds (AREA)

Abstract

Cyclic amides are prepared by heating a lactone in the vapour phase with ammonia, suitably at between 200-350 DEG C. The lactone vapour may be diluted with an inert gas and dehydrating catalysts may be present. In examples, ammonia and vaporized caprolactone, butyrolactone or valerolactone are passed over heated alumina or boron phosphate and the reacted vapours are condensed and then fractionated to recover the resulting caprolactam, a -pyrrolidone or a -piperidone.
GB2608157A 1957-08-19 1957-08-19 Manufacture of amides Expired GB821982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2608157A GB821982A (en) 1957-08-19 1957-08-19 Manufacture of amides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2608157A GB821982A (en) 1957-08-19 1957-08-19 Manufacture of amides

Publications (1)

Publication Number Publication Date
GB821982A true GB821982A (en) 1959-10-14

Family

ID=10238054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2608157A Expired GB821982A (en) 1957-08-19 1957-08-19 Manufacture of amides

Country Status (1)

Country Link
GB (1) GB821982A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133085A (en) * 1962-02-06 1964-05-12 Fmc Corp Liquid phase ammonolysis of butyrolactone in the presence of boric acid as catalyst
US3136780A (en) * 1961-12-12 1964-06-09 Fmc Corp Vapor phase ammonolysis of butyrolactone in the presence of an aluminum silicate clay catalyst

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136780A (en) * 1961-12-12 1964-06-09 Fmc Corp Vapor phase ammonolysis of butyrolactone in the presence of an aluminum silicate clay catalyst
US3133085A (en) * 1962-02-06 1964-05-12 Fmc Corp Liquid phase ammonolysis of butyrolactone in the presence of boric acid as catalyst

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