Method for producing 1,2-benzisothiazol-3-ones

Details Method for producing 1,2-benzisothiazol-3-ones Method for producing 1,2-benzisothiazol-3-ones

C - Chemistry, Metallurgy

07

D

C07D 275/04 (2006.01) C07C 319/14 (2006.01) C07C 323/32 (2006.01) C07C 323/63 (2006.01)

Patent

CA 2151074

A method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-(alkylthio)benzaldehyde with a hydroxylamine to give a 2-(alkylthio)benzaldehyde oxime and carrying out a reaction of the 2-(alkylthio)benzaldehyde oxime with a halogenating agent; and a method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-halobenzonitrile with an alkanethiol in a heterogeneous solvent system in the presence of a base to give a 2-(alkylthio)benzonitrile and carrying out a reaction of the 2-(alkylthio)benzonitrile with an halogenating agent in the presence of water.

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