Preparation of Azasulphonium Salts

Preparation of Azasulphonium Salts. Oxidation of methionine with Ij to give the cyclic sulphimide is catalysed by general bases, and the rate of the reaction does not give a linear Bronsted plot. The mechanism is proposed to involve the formation 

AW-Dialkyl-sulphenamides have been shown to react with t-butyl hypochlorite in the presence of an alcohol to afford a new type of S-alkoxy-iW-dialkyl-aminosulphonium salt [73 R = Me, = (CHjls or ( 112)20(0112)2].  

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