GB1193242A - Process for the Production of Glyoxal - Google Patents

Process for the Production of Glyoxal

Info

Publication number
GB1193242A
GB1193242A GB124168A GB124168A GB1193242A GB 1193242 A GB1193242 A GB 1193242A GB 124168 A GB124168 A GB 124168A GB 124168 A GB124168 A GB 124168A GB 1193242 A GB1193242 A GB 1193242A
Authority
GB
United Kingdom
Prior art keywords
glyoxal
dimethylsulphoxide
carbanion
produced
production
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
GB124168A
Inventor
Hermann G Hauthal
Dieter Lorenz
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.)
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
Original Assignee
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
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 Leuna Werke GmbH, Leuna Werke Walter Ulbright Germany VEB filed Critical Leuna Werke GmbH
Priority to GB124168A priority Critical patent/GB1193242A/en
Publication of GB1193242A publication Critical patent/GB1193242A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/64—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms, e.g. histidine
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds

Landscapes

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

Abstract

1,193,242. Production of glyoxal. LEUNAWERKE WALTER ULBRICHT VEB. 9 Jan., 1968, No. 1241/68. Heading C2C. Glyoxal is prepared by causing a methyl sulphinyl carbanion to act on a substituted formamide of the general formula HCONR 1 R 2 in which R 1 and R 2 represent alkyl groups with 1 to 4 carbon atoms or aryl groups. This reaction is preferably carried out at a temperature between - 20‹ and + 70‹ C. and the methyl sulphinyl carbanion may be produced by reacting sodamide or sodium hydride with dimethylsulphoxide. The glyoxal is formed dissolved in an organic solvent which may be dimethylsulphoxide itself or tetrahydrofuran, and may be used in this form in a number of reactions, or may be isolated as its bisulphite compound in a crystalline form. In Examples 7-9 a glyoxal solution in dimethylsulphoxide so produced is reacted with ammonium acetate and benzil, diphenylbenzil or p-tolil to produce 4,5,4<SP>1</SP>,5<SP>1</SP> - tetraphenyldiimidazyl - 2,2<SP>1</SP>,4,5,4<SP>1</SP>,5<SP>1</SP>- tetradiphenyldiimidazyl - 2,2<SP>1</SP> or 4,5,4<SP>1</SP>,5<SP>1</SP>- tetra - p - tolyldiimidazyl - 2,2<SP>1</SP> respectively.
GB124168A 1968-01-09 1968-01-09 Process for the Production of Glyoxal Expired GB1193242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB124168A GB1193242A (en) 1968-01-09 1968-01-09 Process for the Production of Glyoxal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB124168A GB1193242A (en) 1968-01-09 1968-01-09 Process for the Production of Glyoxal

Publications (1)

Publication Number Publication Date
GB1193242A true GB1193242A (en) 1970-05-28

Family

ID=9718566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB124168A Expired GB1193242A (en) 1968-01-09 1968-01-09 Process for the Production of Glyoxal

Country Status (1)

Country Link
GB (1) GB1193242A (en)

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Legal Events

Date Code Title Description
416 Proceeding under section 16 patents act 1949
PS Patent sealed