With SO2, CS2, and

An SO species is generated by the reaction of SO2 with CS2 in the presence of a Pd catalyst and reacts with butadiene to afford the I, 4-disulfoxide Ill[l04], 

The reaction of butadiene with sulfur gives the disulfide 112, cyclic sulfide 113, and macrocyclic mono- and trisulfides 114 and 1I5[105]. 

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