GB1115564A - Process for the preparation of lactams - Google Patents

Process for the preparation of lactams

Info

Publication number
GB1115564A
GB1115564A GB2334267A GB2334267A GB1115564A GB 1115564 A GB1115564 A GB 1115564A GB 2334267 A GB2334267 A GB 2334267A GB 2334267 A GB2334267 A GB 2334267A GB 1115564 A GB1115564 A GB 1115564A
Authority
GB
United Kingdom
Prior art keywords
hydrogen chloride
lactams
preparation
reaction
lactam
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
GB2334267A
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB1115564A publication Critical patent/GB1115564A/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
    • C07D201/04—Preparation of lactams from or via oximes by Beckmann rearrangement

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Hydrogenated Pyridines (AREA)

Abstract

Lactams are prepared by a reaction between a cyclic ketone and a hydroxylamine salt followed by rearrangement by contact with hydrogen chloride, characterized in that the ketone and hydroxylamine salt are heated in a nitrile at 40-150 DEG C. after which hydrogen chloride is introduced and the mixture further heated at 40-150 DEG C. whereby lactam hydrochloride is formed from which the lactam is obtainable. The water formed in the first stage of the reaction is preferably removed, e.g. by azeotropic distillation before the addition of the hydrogen chloride. Examples describe the preparation of laurolactam, caprolactam, oenantholactam, and caprylolactam.
GB2334267A 1966-05-28 1967-05-19 Process for the preparation of lactams Expired GB1115564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6607466A NL151701B (en) 1966-05-28 1966-05-28 PROCESS FOR THE PREPARATION OF LAURINOLACTAM.

Publications (1)

Publication Number Publication Date
GB1115564A true GB1115564A (en) 1968-05-29

Family

ID=19796739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2334267A Expired GB1115564A (en) 1966-05-28 1967-05-19 Process for the preparation of lactams

Country Status (5)

Country Link
BE (1) BE698848A (en)
CH (1) CH477446A (en)
DE (1) DE1695862A1 (en)
GB (1) GB1115564A (en)
NL (1) NL151701B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110862329A (en) * 2019-11-18 2020-03-06 山东省化工研究院 Synthesis method of 7-aminoheptanoic acid hydrochloride

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110862329A (en) * 2019-11-18 2020-03-06 山东省化工研究院 Synthesis method of 7-aminoheptanoic acid hydrochloride

Also Published As

Publication number Publication date
NL151701B (en) 1976-12-15
DE1695862A1 (en) 1971-05-06
CH477446A (en) 1969-08-31
BE698848A (en) 1967-11-23
NL6607466A (en) 1967-11-29

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