Sulfonyl
A sulfonyl group can refer either to a functional group found primarily in sulfones or to a substituent obtained from a sulfonic acid by the removal of the hydroxyl group similarly to acyl groups. Sulfonyl groups can be written as having the general formula R−S2−R′, where there are two double bonds between the sulfur and oxygen.
Sulfonyl groups can be reduced to the hydrocarbon with lithium aluminium hydride.
In inorganic chemistry, when the group −S2− is not connected to any carbon atoms, it is referred to as sulfuryl.The names of sulfonyl groups typically end in -syl, such as:
