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Cyclic sulphinate rearrangements

Thermolysis of Thiet Dioxides, In the vapour phase at 400 °C or in solution at 220 °C, thiet 1,1-dioxide (80) gave the cyclic sulphinate (81), the intermediate vinylsulphene in this rearrangement (Scheme 12) being... [Pg.121]

Four-membered Rings.—Open-chain sulphinate esters are readily prepared but their cyclic analogues are less easily come by. [2 + 2]Cycloadditions involving SO2 are limited to a few specialized examples, and it has been suggested that it is this mode of reaction that leads to the initially formed adduct (274) between SO2 and ketenimines. These compounds are unstable and rearrange to thiazetidine 5-oxides (275) in 90% yield. A versatile approach has been... [Pg.362]

See other pages where Cyclic sulphinate rearrangements is mentioned: [Pg.1198]    [Pg.1198]    [Pg.858]    [Pg.78]    [Pg.82]    [Pg.123]    [Pg.114]   
See also in sourсe #XX -- [ Pg.145 ]



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