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Title:
PROCESS FOR THE PREPARATION OF AROMATIC SULFUR COMPOUNDS
Document Type and Number:
WIPO Patent Application WO/2000/014060
Kind Code:
A1
Abstract:
A process for the preparation of aromatic thiols represented by the general formula (I): Y¿n?-Ar-(SH)¿m? (wherein Ar is an aromatic hydrocarbon residue; Y is at least one kind of substituent bonded to a carbon atom constituting the aromatic ring of Ar, which is selected from the group consisting of halogeno, -NO¿2?, -CN, -SO¿3?H, -SO¿2?NH¿2? and hydrocarbylsulfonyl; m is an integer of 1 or above; and n is an integer of 0 or above), characterized by reacting an aromatic thio ether represented by the general formula (II): Y¿n?-Ar-(SR)¿m? (wherein Ar, Y, m and n are each as defined above; R is secondary or tertiary hydrocarbyl, or primary hydrocarbyl represented by the general formula: -CH¿2?-R?1¿ or -CH¿2?-CR?2¿=C(R?2¿)¿2? wherein R?1¿ is a monovalent aromatic ring group optionally substituted by hydrocarbyl; and R?2¿ is hydrogen or hydrocarbyl) in the presence of (A) a Lewis acid or a protonic acid (with the proviso that when a protonic acid is used, primary hydrocarbyl is excluded from R) and a solvent, and, if necessary, hydrolyzing the reaction product thus obtained.

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Inventors:
ARAI ISAMU (JP)
YAMAGUCHI TUTOMU (JP)
HIDA YOKO (JP)
Application Number:
PCT/JP1999/003514
Publication Date:
March 16, 2000
Filing Date:
June 30, 1999
Export Citation:
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Assignee:
NIPPON FINECHEMICAL CO LTD (JP)
ARAI ISAMU (JP)
YAMAGUCHI TUTOMU (JP)
HIDA YOKO (JP)
International Classes:
C07C319/06; C07C319/24; C07C323/09; (IPC1-7): C07C319/06; C07C319/24; C07C321/24; C07C323/09; C07C323/64
Domestic Patent References:
WO1996019448A11996-06-27
Foreign References:
JPH08143532A1996-06-04
JPH08143533A1996-06-04
JPH0940636A1997-02-10
JPS56142258A1981-11-06
JPH08231497A1996-09-10
Other References:
See also references of EP 1044965A4
Attorney, Agent or Firm:
Tsukuni, Hajime (Toranomon 1-chome Minato-ku Tokyo, JP)
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