JPS5731660A - Beckmann rearrangement of cycloalkanone oxime - Google Patents

Beckmann rearrangement of cycloalkanone oxime

Info

Publication number
JPS5731660A
JPS5731660A JP10513780A JP10513780A JPS5731660A JP S5731660 A JPS5731660 A JP S5731660A JP 10513780 A JP10513780 A JP 10513780A JP 10513780 A JP10513780 A JP 10513780A JP S5731660 A JPS5731660 A JP S5731660A
Authority
JP
Japan
Prior art keywords
beckmann rearrangement
lactam
temperature
cycloalkanone oxime
hydrocarbon
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.)
Granted
Application number
JP10513780A
Other languages
Japanese (ja)
Other versions
JPH0159270B2 (en
Inventor
Ryozo Katsuta
Koji Kato
Hideo Urushizaki
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP10513780A priority Critical patent/JPS5731660A/en
Publication of JPS5731660A publication Critical patent/JPS5731660A/en
Publication of JPH0159270B2 publication Critical patent/JPH0159270B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)

Abstract

PURPOSE: To eliminate and suppress the foaming in the preparation of ω-lactam by the Beckmann rearrangement of cycloalkanone oxime, effectively, and to improve the production efficiency of the lactam, by adding a slight amount of a hydrocarbon having higher boiling temperature than the temperature of the reaction system.
CONSTITUTION: Cycloalkanone oxime or its derivative (oximes) (e.g. cyclohexanone oxime hydrochloride, α-amino-cyclohexanone oxime hydrochloride, etc.) is subjected to Beckmann rearrangement in the presence of sulfuric acid, chlorosulfonic acid, or sulfur trioxide to obtain the corresponding ω-lactam or its derivative. The above reaction is carried out in the presence of 0.1W10ppm of a hydrocarbon (e.g. n-hexane, n-heptane, etc.) having a boiling point higher than the temperature of said reaction system.
EFFECT: As the lowering of the heat transfer of a heat exchanger is suppressed, the energy efficiency can be improved.
COPYRIGHT: (C)1982,JPO&Japio
JP10513780A 1980-08-01 1980-08-01 Beckmann rearrangement of cycloalkanone oxime Granted JPS5731660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10513780A JPS5731660A (en) 1980-08-01 1980-08-01 Beckmann rearrangement of cycloalkanone oxime

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10513780A JPS5731660A (en) 1980-08-01 1980-08-01 Beckmann rearrangement of cycloalkanone oxime

Publications (2)

Publication Number Publication Date
JPS5731660A true JPS5731660A (en) 1982-02-20
JPH0159270B2 JPH0159270B2 (en) 1989-12-15

Family

ID=14399356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10513780A Granted JPS5731660A (en) 1980-08-01 1980-08-01 Beckmann rearrangement of cycloalkanone oxime

Country Status (1)

Country Link
JP (1) JPS5731660A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005063388A1 (en) * 2003-12-25 2005-07-14 Ube Industries, Ltd. Method for preparing solid acid catalyst and method for producing lactam compound using such catalyst

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005063388A1 (en) * 2003-12-25 2005-07-14 Ube Industries, Ltd. Method for preparing solid acid catalyst and method for producing lactam compound using such catalyst

Also Published As

Publication number Publication date
JPH0159270B2 (en) 1989-12-15

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