GB1479254A - Preparation of copper-free organic compounds which have been synthesised with the aid of copper salts - Google Patents

Preparation of copper-free organic compounds which have been synthesised with the aid of copper salts

Info

Publication number
GB1479254A
GB1479254A GB3478975A GB3478975A GB1479254A GB 1479254 A GB1479254 A GB 1479254A GB 3478975 A GB3478975 A GB 3478975A GB 3478975 A GB3478975 A GB 3478975A GB 1479254 A GB1479254 A GB 1479254A
Authority
GB
United Kingdom
Prior art keywords
copper
compounds
preparation
organic compounds
reaction mixture
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
GB3478975A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB1479254A publication Critical patent/GB1479254A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D275/00—Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings
    • C07D275/04—Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings condensed with carbocyclic rings or ring systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D271/00—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
    • C07D271/02—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms not condensed with other rings
    • C07D271/06—1,2,4-Oxadiazoles; Hydrogenated 1,2,4-oxadiazoles
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
    • C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D277/22—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
    • C07D277/30—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D285/00—Heterocyclic compounds containing rings having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by groups C07D275/00 - C07D283/00
    • C07D285/01—Five-membered rings
    • C07D285/02—Thiadiazoles; Hydrogenated thiadiazoles
    • C07D285/04—Thiadiazoles; Hydrogenated thiadiazoles not condensed with other rings
    • C07D285/12—1,3,4-Thiadiazoles; Hydrogenated 1,3,4-thiadiazoles
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/40—Preparation of azo dyes from other azo compounds by substituting hetero atoms by radicals containing other hetero atoms
    • C09B43/42—Preparation of azo dyes from other azo compounds by substituting hetero atoms by radicals containing other hetero atoms by substituting radicals containing hetero atoms for —CN radicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Catalysts (AREA)

Abstract

The removal of copper (I) compounds from a reaction mixture which contains water-insoluble organic compounds is effected by adding to the reaction mixture an oxidizing agent which converts the copper (I) compounds to copper (II) compounds which are soluble in the reaction medium. Thereafter, the water-insoluble organic compound is either allowed to crystallize out from the reaction mixture or is precipitated by adding a solvent which does not precipitate the copper (II) compounds. This process permits obtaining the water-insoluble organic compounds in a copper-free form without the effluent being loaded (polluted) with copper by any washing processes. This process is applicable to all reactions in which copper (I) compounds are used as catalysts or reactants and in particular is applicable to processes for the preparation of cyano-containing compounds in which the cyanide group is introduced by replacement of halogen atoms, using copper (I) cyanide.
GB3478975A 1974-08-22 1975-08-21 Preparation of copper-free organic compounds which have been synthesised with the aid of copper salts Expired GB1479254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742440270 DE2440270C2 (en) 1974-08-22 1974-08-22 Process for the production of practically copper-free, water-insoluble organic compounds from reaction mixtures

Publications (1)

Publication Number Publication Date
GB1479254A true GB1479254A (en) 1977-07-13

Family

ID=5923821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3478975A Expired GB1479254A (en) 1974-08-22 1975-08-21 Preparation of copper-free organic compounds which have been synthesised with the aid of copper salts

Country Status (9)

Country Link
JP (1) JPS5147025A (en)
BE (1) BE832574A (en)
BR (1) BR7505355A (en)
CH (1) CH624926A5 (en)
DE (1) DE2440270C2 (en)
ES (1) ES440366A1 (en)
FR (1) FR2282413A1 (en)
GB (1) GB1479254A (en)
IT (1) IT1041951B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH639115A5 (en) * 1979-07-20 1983-10-31 Sandoz Ag PROCESSES FOR THE PREPARATION OF AZOBENZENE COMPOUNDS.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290915B (en) * 1966-02-17 1969-03-20 Bayer Ag Process for dyeing and printing fiber materials made from aromatic polyesters and cellulose acetates
US3772268A (en) * 1971-12-20 1973-11-13 Eastman Kodak Co Purification of copper contaminated dye compounds using di(hydroxyalkyl)sulfides

Also Published As

Publication number Publication date
BE832574A (en) 1976-02-20
CH624926A5 (en) 1981-08-31
BR7505355A (en) 1976-08-03
IT1041951B (en) 1980-01-10
JPS5147025A (en) 1976-04-22
FR2282413B1 (en) 1979-05-18
DE2440270C2 (en) 1985-06-05
ES440366A1 (en) 1977-03-01
DE2440270A1 (en) 1976-03-04
FR2282413A1 (en) 1976-03-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930821