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JPS56113752A - Preparation of malononitrile - Google Patents

Preparation of malononitrile

Info

Publication number
JPS56113752A
JPS56113752A JP1602280A JP1602280A JPS56113752A JP S56113752 A JPS56113752 A JP S56113752A JP 1602280 A JP1602280 A JP 1602280A JP 1602280 A JP1602280 A JP 1602280A JP S56113752 A JPS56113752 A JP S56113752A
Authority
JP
Japan
Prior art keywords
ammonia
malononitrile
diester
formula
reacting
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
JP1602280A
Other languages
Japanese (ja)
Other versions
JPS612060B2 (en
Inventor
Susumu Tawara
Kozo Fujii
Keigo Nishihira
Akira Ishikawa
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.)
Ube Corp
Original Assignee
Ube 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP1602280A priority Critical patent/JPS56113752A/en
Publication of JPS56113752A publication Critical patent/JPS56113752A/en
Publication of JPS612060B2 publication Critical patent/JPS612060B2/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
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: To prepare malononitrile useful as a raw material of vitamin B1, economically, in an industrial scale, without using hazardous hydrocyamic acid and corrosive chlorine, etc., by reacting malonic acid diester with ammonia in gaseous phase in the presence of dehydration catalyst.
CONSTITUTION: Malononitrile of formula II is prepared by reacting a malonic acid diester of formula I (R is alkyl), e.g. dimethyl malonate, with ammonia in gaseous phase in the presence of a dehydration catalyst (e.g. phosphoric acid supported by a carrier such as silica), e.g. at 300W450°C for 0.1W20 seconds. The preferable molar ratio of the diester to ammonia is 1:(10W800).
EFFECT: The raw materials have high safety. There is no problem of the apparatus corrosion, and the treatment of waste and waste liquid can be simplified.
COPYRIGHT: (C)1981,JPO&Japio
JP1602280A 1980-02-14 1980-02-14 Preparation of malononitrile Granted JPS56113752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1602280A JPS56113752A (en) 1980-02-14 1980-02-14 Preparation of malononitrile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1602280A JPS56113752A (en) 1980-02-14 1980-02-14 Preparation of malononitrile

Publications (2)

Publication Number Publication Date
JPS56113752A true JPS56113752A (en) 1981-09-07
JPS612060B2 JPS612060B2 (en) 1986-01-22

Family

ID=11904934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1602280A Granted JPS56113752A (en) 1980-02-14 1980-02-14 Preparation of malononitrile

Country Status (1)

Country Link
JP (1) JPS56113752A (en)

Also Published As

Publication number Publication date
JPS612060B2 (en) 1986-01-22

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