Sulfones, vinyl heteroconjugate addition

Finally, useful stereoselectivities have been recorded for the heteroconjugate addition of organometallic reagents to 1-silyl substituted vinyl sulfones.22 The synthesis of such sulfones can be achieved starting from phenylthioacetylene.6 1 11 23 The synthesis of the dicobalt hexacarbonyl complex24 and the polymerization of phenylthioacetylene25 have been described. 

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