Properties of Sulphonic Acids

Properties of Sulphonic Acids.—In the course of a study of the kinetics of nitration of arenesulphonic acids in H2SO4 it was shown that the sulphonate anion is a deactivating substituent even though it carries a negative charge. [Pg.66]

Some and C n.m.r. studies of alkane- and arene-sulphonic acids in H2SO4 yielded pJ bh values for representative compounds. Electric dipole-moment data for potassium toluene-p-sulphonate, in the presence of LiCl and dibenzo-18-crown-6 ether, in octanoic acid indicate a symmetrical structure for the ion-pair, with K+ adjacent to the tetrahedral sulphur atom. [Pg.66]

The discovery that an arenesulphonic acid is in equilibrium with its fluoride in FSO3H solution (ArSOgH + FSO3H ArS02p + H2SO4) may open up a new field of study because of its implications in mechanistic and synthetic aspects. [Pg.66]

Hydrogenation of arenesulphonic acids to ciy-cyclohexanesulphonic acids is feasible using Rh-Al20a or Ru-AlgOa catalysts. [Pg.66]

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