JPS56123945A - Preparation of malonic acid dialkyl ester - Google Patents

Preparation of malonic acid dialkyl ester

Info

Publication number
JPS56123945A
JPS56123945A JP2833180A JP2833180A JPS56123945A JP S56123945 A JPS56123945 A JP S56123945A JP 2833180 A JP2833180 A JP 2833180A JP 2833180 A JP2833180 A JP 2833180A JP S56123945 A JPS56123945 A JP S56123945A
Authority
JP
Japan
Prior art keywords
gas
reaction
malonic acid
dialkyl ester
acid dialkyl
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.)
Pending
Application number
JP2833180A
Other languages
Japanese (ja)
Inventor
Hikari Sakurada
Hirosuke Wada
Shigetomi Kawada
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP2833180A priority Critical patent/JPS56123945A/en
Publication of JPS56123945A publication Critical patent/JPS56123945A/en
Pending 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 improve the rate of reaction and the space time yield in the preparation of a malonic acid dialkyl ester by the reaction of a monohalogenoacetic acid ester with CO and a lower aliphatic alcohol, by adding H2 gas to the reaction gas, and recycling the gas.
CONSTITUTION: A malonic acid dialkyl ester is prepared by reacting a monohalogenoacetic acid alkyl ester with CO and a lower aliphatic alcohol in the presence of a cobalt carbonyl catalyst and a basic substance (e.g. an alkali metal carbonate). In the above process, the reaction is carried out by adding 10W70% of hydrogen gas to the reaction gas, and purging a part of the gas after reaction while recycling the remaining gas to the inlet of the reactor. Since the process is simple and uses water gas available at a relatively low cost, as a raw material, it is extremely economical.
COPYRIGHT: (C)1981,JPO&Japio
JP2833180A 1980-03-06 1980-03-06 Preparation of malonic acid dialkyl ester Pending JPS56123945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2833180A JPS56123945A (en) 1980-03-06 1980-03-06 Preparation of malonic acid dialkyl ester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2833180A JPS56123945A (en) 1980-03-06 1980-03-06 Preparation of malonic acid dialkyl ester

Publications (1)

Publication Number Publication Date
JPS56123945A true JPS56123945A (en) 1981-09-29

Family

ID=12245622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2833180A Pending JPS56123945A (en) 1980-03-06 1980-03-06 Preparation of malonic acid dialkyl ester

Country Status (1)

Country Link
JP (1) JPS56123945A (en)

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