[3] Similar to MsCl, Ms2O can perform mesylation of alcohols to form sulfonates.

[7] Assisted by Lewis acid catalyst, Friedel-Crafts methylsulfonation of aryl ring can be achieved by Ms2O.

In contrast to MsCl, either activated or deactivated benzene derivatives can form the corresponding sulfonatesin satisfactory yields with Ms2O.

[8] Examples of aromatic sulfonation with Ms2O: Ms2O catalyzes the esterification of alcohols by carboxylic acids.

Both alcohols on ethylene glycol successfully benzoylated with benzoic acid and Ms2O.