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Sulphonyl group electronic effect

The isolated nitrososulphinates are unstable brown crystals with the N=0 IR absorption band near 1840 cm-1, i.e. at shorter wavelengths than in nitroso thiols (1490-1700 cm-1) due to the powerful electron-withdrawing effect of the sulphonyl group. They decompose... [Pg.677]

A methyl group attached to the double bond should decrease the rate of the nucleophilic attack by increasing the electron density and the steric interactions at the double bond. In addition, an a-methyl group should decrease the overall rate even for highly basic nucleophiles, by blocking the elimination-addition route. Substituent effects in a-aryl-sulphonyl-j8-haloethylenes bear out this prediction. The rate retardation by an a-methyl group, more pronounced for the less reactive... [Pg.69]

See other pages where Sulphonyl group electronic effect is mentioned: [Pg.1206]    [Pg.1206]    [Pg.1029]    [Pg.1030]    [Pg.1029]    [Pg.1030]    [Pg.24]    [Pg.94]    [Pg.26]    [Pg.198]    [Pg.681]    [Pg.693]    [Pg.232]    [Pg.480]    [Pg.86]    [Pg.176]    [Pg.2]    [Pg.366]    [Pg.7]    [Pg.242]    [Pg.69]    [Pg.60]    [Pg.68]   


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Sulphonyl

Sulphonyl group

Sulphonylation

Sulphonylations

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