GB916751A - Preparation of sulphinic acids - Google Patents

Preparation of sulphinic acids

Info

Publication number
GB916751A
GB916751A GB2376060A GB2376060A GB916751A GB 916751 A GB916751 A GB 916751A GB 2376060 A GB2376060 A GB 2376060A GB 2376060 A GB2376060 A GB 2376060A GB 916751 A GB916751 A GB 916751A
Authority
GB
United Kingdom
Prior art keywords
sulphur dioxide
aluminium compound
sulphinic
acid
solvent
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
GB2376060A
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.)
ConocoPhillips Co
Original Assignee
Continental Oil Co
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 Continental Oil Co filed Critical Continental Oil Co
Publication of GB916751A publication Critical patent/GB916751A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C313/00—Sulfinic acids; Sulfenic acids; Halides, esters or anhydrides thereof; Amides of sulfinic or sulfenic acids, i.e. compounds having singly-bound oxygen atoms of sulfinic or sulfenic groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C313/02—Sulfinic acids; Derivatives thereof
    • C07C313/04—Sulfinic acids; Esters thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)

Abstract

Sulphinic acids are prepared by reacting a trialkyl or aryl aluminium compound with sulphur dioxide, the aluminium compound being added to the sulphur dioxide at a temperature varying from -75 to 50 DEG C. in the presence of a solvent for the sulphur dioxide, the solvent forming a coordination complex with the aluminium compound and having a boiling-point above the reaction temperature employed, hydrolysing the resulting reaction product with water or an acid, and recovering the sulphinic acid from the hydrolysate. Suitable solvents are, for example, tetrahydrofuran, pyridine, triethylamine, dimethylformamide, dimethyl acetamide, diethylformamide, dimethyl propionamide, anisole, diphenyl ether, dimethyl aniline, N-methyl pyrrole, N-ethyl pyrrole, trimethylamine, dibenzofuran, quinoline and diethylaniline. The sulphinic acid may be present in the hydrolysate in the aqueous phase or as an organic phase according to its solubility. If present in the aqueous phase it may be separated by solvent extraction. Specifications 819,181 and 916,752 are referred to.
GB2376060A 1959-07-17 1960-07-07 Preparation of sulphinic acids Expired GB916751A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82773359A 1959-07-17 1959-07-17
US3179260A 1960-06-14 1960-06-14

Publications (1)

Publication Number Publication Date
GB916751A true GB916751A (en) 1963-01-30

Family

ID=26707610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2376060A Expired GB916751A (en) 1959-07-17 1960-07-07 Preparation of sulphinic acids

Country Status (1)

Country Link
GB (1) GB916751A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102731349A (en) * 2011-04-08 2012-10-17 中国中化股份有限公司 Aromatic sulfinic acid compound preparation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102731349A (en) * 2011-04-08 2012-10-17 中国中化股份有限公司 Aromatic sulfinic acid compound preparation method
CN102731349B (en) * 2011-04-08 2013-12-18 中国中化股份有限公司 Aromatic sulfinic acid compound preparation method

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