Enesulfenic acid

Benzenesulfenylchloride. See above under Benz-enesulfenic Acid and Derivatives... 

Oxidation of a chiral dithioate 94 with m-CPBA yielded an (E) and (Z) mixture of chiral sulfines 95, which underwent racemization on standing for 24 h via the enesulfenic acid intermediate 96 (Scheme 21) [26]. 

The ease of enolisation of sulfmes and the use of enesulfenates are a debated topic. A contribution is the report that vinylsulfenic acids, tautomers of enethiolisable sulfines, have been trapped intramolecularly by a double or triple carbon-carbon bond [140], as shown in the accompanying example. 

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See also in sourсe #XX -- [ ]

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