# How does SO2Cl2 react with alcohols?

Is the mechanism similar to the reaction of $\ce{SOCl2}$ with alcohols?
If not, then how is it different? We have been taught about the latter at school but my friend quizzed me about $\ce{SO2Cl2}$.

Please give the detailed reaction mechanism.

• I was asking on high school level, we have been taught the reaction of Thionyl Chloride with alcohols to give a carbon with double-bonded =O and -Cl ( sorry I don't know the name for the functional group). How does SO2Cl2 react with alcohols, or other functional groups? @Mithoron – sidgrand98 Jun 29 '15 at 16:44

According to this article a mixture of products is formed, with alkylchlorsulfonates $\ce{Cl-SO2-O-R}$ being dominant products. These molecules are resistant to abstraction of sulfur trioxide, probably because trioxide is a very strong Lewis acid, unlike dioxide.