IN151753B - - Google Patents

Info

Publication number
IN151753B
IN151753B IN271/CAL/81A IN271CA1981A IN151753B IN 151753 B IN151753 B IN 151753B IN 271CA1981 A IN271CA1981 A IN 271CA1981A IN 151753 B IN151753 B IN 151753B
Authority
IN
India
Prior art keywords
chloride
chloroacetoacetic
degrees
converting
temperatures
Prior art date
Application number
IN271/CAL/81A
Inventor
Rene Blum
Leander Tenud
Original Assignee
Lonza Ag
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 Lonza Ag filed Critical Lonza Ag
Publication of IN151753B publication Critical patent/IN151753B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/46—Preparation of carboxylic acid esters from ketenes or polyketenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1. Process for the production of 2-chloroacetoacetic esters, characterized in converting diketene at temperatures of from +10 to -40 degrees C in the presence of chlorinated aliphatic hydrocarbons as solvent by using hydrogen chloride into the acetoacetic chloride, forming the 2-chloroacetoacetic chloride by introducing of chlorine at temperature of from +10 to -40 degrees C, and converting the 2-chloroacetoacetic chloride by adding of alcohols having from 1 to 4 carbon atoms at temperatures of from +10 to -40 degrees C into the corresponding esters.
IN271/CAL/81A 1980-04-02 1981-03-12 IN151753B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH260680 1980-04-02

Publications (1)

Publication Number Publication Date
IN151753B true IN151753B (en) 1983-07-23

Family

ID=4237538

Family Applications (1)

Application Number Title Priority Date Filing Date
IN271/CAL/81A IN151753B (en) 1980-04-02 1981-03-12

Country Status (10)

Country Link
EP (1) EP0037015B1 (en)
JP (1) JPS56154438A (en)
AT (1) ATE3852T1 (en)
CS (1) CS217995B2 (en)
DD (1) DD157794A5 (en)
DE (1) DE3160460D1 (en)
IN (1) IN151753B (en)
MX (1) MX152284A (en)
PL (1) PL134443B1 (en)
SU (1) SU988187A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL65246A (en) * 1981-03-26 1985-11-29 Lonza Ag Process for the preparation of 2-chloroacetoacetamides
JPS6025955A (en) * 1983-07-22 1985-02-08 Nippon Synthetic Chem Ind Co Ltd:The Production of gamma-chloroacetoacetic acid ester
CA2987775C (en) 2011-04-01 2019-01-08 Lonza Ltd Preparation of 3,5-dioxo hexanoate ester in two steps
CA3007037A1 (en) 2015-12-03 2017-06-08 Bayer Cropscience Aktiengesellschaft Mesoionic halogenated 3-(acetyl)-1-[(1,3-thiazol-5-yl)methyl]-1h-imidazo[1,2-a]pyridin-4-ium-2-olate derivatives and related compounds as insecticides
EP3638677A1 (en) 2017-06-16 2020-04-22 Basf Se Mesoionic imidazolium compounds and derivatives for combating animal pests
CN109503381B (en) * 2018-12-12 2022-04-29 安徽金禾实业股份有限公司 4-chloroacetoacetic acid ethyl ester microchannel reaction method and device
CN113877504A (en) * 2021-11-03 2022-01-04 江苏恒安化工有限公司 Preparation device and method of ethyl 4-chloroacetoacetate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209683A (en) * 1936-06-27 1940-07-30 Carbide & Carbon Chem Corp Halogenation of diketene
CH492670A (en) * 1968-04-24 1970-06-30 Lonza Ag Process for the preparation of γ-chloroacetoacetic acid ester
JPS5823373B2 (en) * 1975-03-27 1983-05-14 日本合成化学工業株式会社 Gamma - Chloracetosaxane chloride

Also Published As

Publication number Publication date
EP0037015A2 (en) 1981-10-07
ATE3852T1 (en) 1983-07-15
EP0037015A3 (en) 1981-12-30
DD157794A5 (en) 1982-12-08
JPS56154438A (en) 1981-11-30
PL230340A1 (en) 1981-11-27
JPH0125735B2 (en) 1989-05-19
CS217995B2 (en) 1983-02-25
EP0037015B1 (en) 1983-06-22
SU988187A3 (en) 1983-01-07
PL134443B1 (en) 1985-08-31
DE3160460D1 (en) 1983-07-28
MX152284A (en) 1985-06-20

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