Sulfones, Sulfonic Acids, and Their Derivatives

The hydrogenolysis of sulfones and sulfonic acids over MoS3 requires higher temperatures (300-375°C) than for thiols, sulfides, or disulfides, except with dibenzyl sulfone, where hydrogenolysis to give toluene proceeded at 200-250°C. / -Tolu- 

Over palladium catalysts in acetone-water, arenesulfonyl chlorides are converted to the corresponding sulfinic acids, and further slowly to diaryl disulfide (eq. 13.100).183,184 

Sulfones are usually resistant to desulfurization with Raney Ni.151,186 However, diphenyl sulfone and benzyl-type sulfones are desulfurized with the use of large 

Sulfoxides can be desulfurized successfully by Raney Ni. The sulfoxido ketone 67 and the sulfoxidoenol ether 69 were readily desulfurized with Raney Ni to yield the ketone 68 and the diene 70, respectively (eqs. 13.102 and 13.103).154 

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