Tetrahedron Letters p. 5935 - 5938 (1990)
Update date:2022-08-02
Topics:
Yung, Tommy W. K.
Sammes, Michael P.
The 1,3,4-oxathiazolium salts (11,12), which are the first representatives of the six possible classes of aromatic oxathiazolium cations, are readily prepared by N-acylation of the S-acylthiohydroxylamines ( 7,8) followed by cyclization with a strong acid and an acyl anhydride. The positive charge appears to be delocalized to a smaller extent than in analogous dithiazolium salts.
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