PROCESS FOR THE PREPARATION OF AROMATIC OR HETEROAROMATIC SULFONYL HALIDES

WIPO Patent Application WO/1996/033167

A1

A process for preparing an aromatic or heteroaromatic sulfonyl halide of the general formula (3): Ar-(-SO2Y)n by halogenating an aromatic or heteroaromatic methyl sulfide of the general formula (1): Ar-(-SCH3-mXm)n or an aromatic or heteroaromatic methyl sulfoxide of the general formula (2): Ar-(-SOCH3-mXm)n with a halogenating agent in the presence of water (wherein Ar is an optionally substituted aromatic or heteroaromatic ring; X and Y are each halogeno; m is an integer of 0 to 3; and n is 1 or 2). This process enables industrial, uncostly and easy production of aromatic or heteroaromatic sulfonyl halides.

KARINO HITOSHI (JP)
GODA HIROSHI (JP)
SAKAMOTO JUN-ICHI (JP)
YOSHIDA KATSUHIKO (JP)
NISHIGUCHI HIDEAKI (JP)

PCT/JP1995/002675

October 24, 1996

December 25, 1995

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SUMITOMO SEIKA CHEMICALS (JP)
KARINO HITOSHI (JP)
GODA HIROSHI (JP)
SAKAMOTO JUN-ICHI (JP)
YOSHIDA KATSUHIKO (JP)
NISHIGUCHI HIDEAKI (JP)

C07C303/18; C07C303/02; C07C303/16; C07C309/86; C07C315/04; C07C319/20; C07D213/71; C07D241/18; C07D251/22; C07D263/46; C07D275/03; C07D277/36; C07C309/89; C07C317/14; C07C323/66; C07D275/02; (IPC1-7): C07C309/86; C07C303/02; C07C303/16; C07D213/71; C07D241/18; C07D251/22; C07D263/46; C07D275/03; C07D277/36; C07D333/40

JPS58208239A

1983-12-03

J. CHEM. SOC., CHEM. COMMUN., 1973, No. 2, GROSSERT J.S. et al., "Oxidative Chlorination of alpha-Halo Sulfides as a Synthetic Route to alpha-Halo Sulfoxides, Sulfinyl Chlorides and Sulfonyl Chlorides", page 50.
See also references of EP 0770599A4

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