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Sulfimides esters

In addition to sulfimides, the nitrogen analogs of sulfinates and sulfinamides are chiral and have been obtained as optically active compounds. For instance, the synthesis of diastereomeric menthyl p-toluenesulfinimidoates 90 mentioned above was effected by Cram and his collaborators (18,137) on two ways. The first comprised the reaction of racemic A -tosyl-p-tolueneiminosulfinyl chloride 92 with menthol, followed by separation of the diastereomers of 90, whereas in the second method the reaction of the ester (->45 with chloramine T was utilized. [Pg.362]

FeCl2 has been used to catalyse nitrene transfer from l-butyloxycarbonyl azide to sulfoxides (to form sulfoximides), sulfides (to give sulfimides), and a ketene acetal (to form an a-amino ester). ... [Pg.270]

The traditional synthesis of cyclic sulfimidates from /3-aminoalcohols and SOCl2 in the presence of amine as a base has been developed further to the preparation of the enantiopure monocyclic as well fused sulfimidates (Schemes 26 and 27). 1,2,3-Oxathiazolidine mono-.Y-oxides are readily oxidized to corresponding sulfamidates by RuCR and NalCb, and the synthesis of sulfamidates can be performed in a one-pot procedure from -aminoalcohols without isolation of intermediate sulfimidates (Equation 37). The reaction of sulfamate esters 145 with PhI(OAc)2 and various catalysts proved to be a reliable method for the enantioselective preparation of cyclic sulfamidates 146 (Equation 35). [Pg.31]

Ring opening of cyclic sulfimidic acid esters... [Pg.370]


See other pages where Sulfimides esters is mentioned: [Pg.404]    [Pg.1183]    [Pg.66]    [Pg.272]    [Pg.248]    [Pg.274]    [Pg.123]    [Pg.291]    [Pg.52]    [Pg.241]    [Pg.131]   
See also in sourсe #XX -- [ Pg.19 , Pg.181 ]




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