PROCESS FOR PREPARING ORGANIC SULFUR ACIDS OR SALTS THEREOF

Title:

PROCESS FOR PREPARING ORGANIC SULFUR ACIDS OR SALTS THEREOF

Document Type and Number:

WIPO Patent Application WO/2001/064629

Kind Code:

A1

Abstract:

A process for preparing organic sulfur acids or salts thereof, which comprises reacting an organic substrate with a sulfur oxide in the presence of a metal compound catalyst in the absence of N-hydroxy- and N-oxo-cyclic imide compounds to thereby obtain the corresponding organic sulfur acid or a salt thereof. The organic substrate includes (a) methylene-bearing homo- and hetero-cyclic compounds, (b) compounds bearing methyne carbon atoms, (c) unsaturated compounds bearing methyl or methylene groups at the position adjacent to the unsaturated bond, (d) nonaromatic heterocyclic compounds having carbon-hydrogen bonds at the position adjacent to the heteroatom, (e) linear alkanes, and so on, while the sulfur oxide may be sulfur dioxide or the like. This process permits efficient production of organic sulfur acids or salts thereof under mild conditions.

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Inventors:

ISHII YASUTAKA (JP)
NAKANO TATSUYA (JP)

Application Number:

PCT/JP2001/001462

Publication Date:

September 07, 2001

Filing Date:

February 27, 2001

Export Citation:

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Assignee:

DAICEL CHEM (JP)
ISHII YASUTAKA (JP)
NAKANO TATSUYA (JP)

International Classes:

C07B61/00; C07C303/14; C07C309/04; C07C309/25; C07C309/27; (IPC1-7): C07C303/14; C07C309/04; C07C309/25

Foreign References:

US3956371A	1976-05-11
GB1052484A
US3518299A	1970-06-30
JPS5163162A	1976-06-01
GB1052484A

Other References:

S. FUMASONI ET AL.: "sulfonation of paraffins in presence of metallic ions", RASS. CHIM., vol. 37, no. 4, 1985, pages 179 - 184, XP002941616
SERGIO FUMASONI: "Sulfoxidation of paraffin hydrocarbons in the presence of heavy metal ions", NUOVA CHIM., vol. 48, no. 5, 1972, pages 33 - 37, XP002941615
"Spring Conference Proceedings", 1999, THE CHEMICAL SOCIETY OF JAPAN
See also references of EP 1188743A4

Attorney, Agent or Firm:

Goto, Yukihisa (Higashitenma 2-chome Kita-ku, Osaka-shi Osaka, JP)

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