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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-S(=O)
2
-R', where there are two
double bonds
between the
sulfur
and
oxygen
.
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