Iron-mediated reactions sulfones

The synthesis of sulfones has been performed by iron-catalysed decomposition of sulfonylhydrazones. As commonly accepted for the related Bamford Stevens reaction, the reaction is thought to proceed through generation of a diazocompound by base-mediated thermal decomposition of the sulfonylhydrazone, leading to an intermediate iron carbenoid (65), which forms the sulfone (66) when trapped by the sulflnate anion released in the first step (Scheme 9). 

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