GB560040A - Improvements in or relating to the manufacture of lactams - Google Patents

Improvements in or relating to the manufacture of lactams

Info

Publication number
GB560040A
GB560040A GB12911/42A GB1291142A GB560040A GB 560040 A GB560040 A GB 560040A GB 12911/42 A GB12911/42 A GB 12911/42A GB 1291142 A GB1291142 A GB 1291142A GB 560040 A GB560040 A GB 560040A
Authority
GB
United Kingdom
Prior art keywords
lactams
aminovaleronitrile
aminobutyronitrile
acetonitrile
sulphide
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
GB12911/42A
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
Publication of GB560040A publication Critical patent/GB560040A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Hydrogenated Pyridines (AREA)

Abstract

Lactams are made by heating in the liquid phase to 200-375 DEG C for not more than one hour, a weak aqueous solution of an aminonitrile having at least one hydrogen atom directly bonded to an amino nitrogen atom and which is capable of forming a ring containing not more than 8 carbon atoms. Hydrogen sulphide is added to the reaction mixture as catalyst, and ammonia formed is removed at an intermediate point. Examples give the preparation of epsilon-caprolactam from epsilonaminocapronitrile. Other aminonitriles which may be used are aminoacetonitrile, N-methyl-4-aminobutyronitrile, 4-aminobutyronitrile, 5-aminovaleronitrile, N - ethyl - 5 - aminovaleronitrile, 2-(aminoethoxy)acetonitrile, 3-(aminopropyl)-acetonitrile sulphide, o-(2-aminoethyl)-benzylcyanide, o-cyanobenzylamine, o-aminobenzylcyanide, o-(2-cyanoethoxy)-phenylamine, and o-cyano-N-methylbenzylamine.
GB12911/42A 1941-09-12 1942-09-14 Improvements in or relating to the manufacture of lactams Expired GB560040A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US560040XA 1941-09-12 1941-09-12

Publications (1)

Publication Number Publication Date
GB560040A true GB560040A (en) 1944-03-16

Family

ID=22001529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12911/42A Expired GB560040A (en) 1941-09-12 1942-09-14 Improvements in or relating to the manufacture of lactams

Country Status (1)

Country Link
GB (1) GB560040A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996017826A1 (en) * 1994-12-03 1996-06-13 Basf Aktiengesellschaft Method for preparing caprolactam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996017826A1 (en) * 1994-12-03 1996-06-13 Basf Aktiengesellschaft Method for preparing caprolactam

Similar Documents

Publication Publication Date Title
ES316768A1 (en) Procedure for the preparation of a new polyamide. (Machine-translation by Google Translate, not legally binding)
GB1046387A (en) Aminoalkanenitriles and process for preparing the same
GB600708A (en) Improvements in or relating to stabilization of acrylonitrile against deterioration
GB560040A (en) Improvements in or relating to the manufacture of lactams
GB1022959A (en) Improvements relating to the production of olefines
GB967718A (en) N-substituted azaspiranes
GB897931A (en) Preparation of ª-, ª--pentamethylene butyrolactone
GB1121038A (en) Process for the manufacture of aminonitriles
GB560100A (en) Improvements in or relating to the manufacture of n-substituted amides
GB959799A (en) Angular carboxylic lactam n-sulphonates and their preparation
GB917788A (en) Purification of aliphatic dinitriles
GB663761A (en) Improvements in the manufacture of polyamides by condensation in presence of catalysts
US2783264A (en) Preparation of nitriles from amides
GB1017278A (en) Amides derived from aspartic acid and their preparation
GB912946A (en) Improvements in or relating to new substituted 2,6-diketopiperazines, intermediates in the production thereof and processes for their production
GB654521A (en) Manufacture of phenoxy-acetamidines
DK27787D0 (en) PROCEDURE FOR THE PREPARATION OF ALFA-AMINO-ALFA-HYDROGEN CARBOXYLIC ACIDAMIDS
GB876079A (en) Halogen-substituted amidoximes and manufacturing process
GB1021529A (en) Diazaspiroalkanes
GB810165A (en) Process for the preparation of lactams
GB648496A (en) New or improved means for warming the interior of a car
GB898692A (en) ª-, ª--pentamethylene butyrolactone
GB1014919A (en) Acetamide derivatives and process for their preparation
GB867966A (en) Process for the synthesis of methionine
ES443599A1 (en) A procedure for the preparation of 3-alkyl-3-cefem-4-carboxylic acids. (Machine-translation by Google Translate, not legally binding)