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Unexpected S(O) 2 –O Bond Scission upon Anionic Cycliarylation of Cyclic Sulfamidates. A New Route to N-Functionalized Benzosultams.
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1  Université Lille Nord de France, F-59000 Lille, France
2  USTL, Laboratoire de Chimie Organique Physique, EA CMF 4478, Bâtiment C3(2), F-59655 Villeneuve d'Ascq, France
3  CNRS, UMR 8181 'UCCS', F-59655 Villeneuve d'Ascq, France

Abstract: 1,2-Cyclic sulfamidates undergo novel, efficient and regiospecific intramolecular nucleophilic cleavage with aryllithiated species to provide an entry to poly, diversely and enantiopure N-substituted benzosultams.
Keywords: carbanion, anionic cyclization, sulfamidates, benzosultams.