In the title compound, C9H7NO3S, the benzoisothia­zolone ring system is essentially planar, with a maximum deviation of 0.013 (2) Å. In the crystal, mol­ecules are linked via O—H⋯O hydrogen bonds, forming chains along [010]. In addition, weak inter­molecular C—H⋯O hydrogen bonds are present.

The title compound, C10H9NO3S, was synthesized by the reaction of benzo[d]isothia­zol-3(2H)-one with ethyl carbonochloridate in toluol. The benzisothia­zolone ring system is approximately planar, with a maximum deviation from the mean plane of 0.020 (1) Å for the N atom.

The title compound, C11H11NO3S, was synthesized by the reaction of benzo[d]isothia­zol-3(2H)-one with propyl carbono­chloridate in toluene. The benzoisothiazolone ring system is approximately planar with a maximum deviation from the mean plane of 0.0226 (14) Å for the N atom. Weak inter­molecular C—H⋯O hydrogen bonding occurs in the crystal structure.

The title compound, C11H11NO3S, was synthesized by the reaction of benzo[d]isothia­zol-3(2H)-one with isopropanol in toluene. The benzoisothia­zolone ring system is essentially planar, with a mean deviation of 0.018 (2) Å from the least–squares plane defined by the nine constituent atoms. In the crystal, mol­ecules are linked by weak inter­molecular C—H⋯O hydrogen bonds.

No abstract