Sulphenic Acids and Sulphenate Esters

Allylic sulphenic acids are transient intermediates in the rearrangement of episulphoxides carrying a suitably located H atom /ru/i5-but-2-ene episulphoxide gives diallyl thiolsulphinate via HaC=CH CHMeSOH, the product (145) existing in equilibrium with the butenyl thio-sulphoxylate (146). 

Sulphenate esters, prepared through an improved method involving JV-t-butylthio-phthalimide (148 = Bu ) and alkoxides, give quantitative 

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