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Reaction of dialkyl disulfides or diselenides with allenes is catalyzed by a rhodium‐phosphine complex and trifluoromethanesulfonic acid giving ( E )‐2‐alkylthio(seleno)‐1,3‐dienes and ( E )‐2‐alkylthio(seleno)‐2‐alkenes. Unlike the reaction of alkynes, the reaction of allene is accompanied by hydride transfer.
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Arisawa et al. (2003) studied this question.
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