2,1-Benzisothiazoles physical properties

Benzisothiazole is a very pale yellow solid, m.p. 37°, with an odor of bitter almonds. It is slightly soluble in water, volatile in steam, and very soluble in concentrated acids and in almost all organic solvents. It boils at 220° without appreciable decomposition.3 Few other physical properties or spectroscopic data appear to have been recorded, but the 60 MHz NMR spectrum of a solution in carbon tetrachloride shows a singlet at 8.735, ascribed to the proton on the heterocyclic ring, and a complex band between 7.12 and 8.008 resulting from the benzenoid ring protons.25... 

Benzisothiazole 1,1-Dioxides as Condensing Agents 155 With alcohols and thiols 155 Physical Properties 155... 

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