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US 5,679,827 AGranted
Cyanobenzenesulfenyl halide and process for preparation of 3-substituted benzisothiazole using the same
AssigneeSumitomo Seika Chemicals Co., Ltd.
InventorsHiroshi Goda, Junichi Sakamoto, Shigeki Sakaue, Sakae Kajihara, Miki Todo
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Abstract
The present invention provides a compound represented by the general formula (I): ##STR1## wherein X represents Cl or Br, a process for preparation of the same and a process for preparation of 3-substituted benzisothiazole by reaction of the compound (I) with a piperazine compound.
Claims9
2-Cyanobenzenesulfenyl halide represented by the general formula (I):
- ##STR7## wherein X represents Cl or Br.
A process for preparation of 2-cyanobenzenesulfenyl halide represented by the general formula (I), which comprises halogenating a 2-cyanophenylthio derivative represented by the general formula (II):
- ##STR8## wherein R.sub.1 represents H, alkaline metal, 2-cyanophenylthio group or straight or branched alkyl group having 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.