In the 2,2′-bipyridine (bipy) catalysed CrVI oxidation of dimethyl sulfoxide (DMSO) to dimethyl sulfone, the CrVI–bipy complex formed at the pre - equilibrium step undergoes a nucleophilic attack by the S or O of DMSO to form a positively charged reactive intermediate. This intermediate experiences an oxygen transfer or a ligand coupling to give the products. The anionic surfactant (SDS) accelerates the process while the cationic surfactant (CPC) retards the reaction.
HasanF., and RocekJ., J. Am. Chem. Soc., 1972, 94, 3181; 1974, 96, 534.
7.
HasanF., and RocekJ., J. Am. Chem. Soc., 1973, 95, 5421; 1975, 97, 3762.
8.
(a) PengT.Y., and RocekJ., J. Am. Chem. Soc., 1976, 98, 1026; 1977, 99, 7622.
9.
SrinivasanC., RajagopalS., and ChellamaniA., J. Chem. Soc., Perkin Trans. 2, 1990, 1839.
10.
(a) DasA.K., RoyA., SahaB., MohantyR. K., and DasM., J. Phys. Org. Chem., 2001, 14, 333.
11.
MondalS.K., DasM., KarD., and DasA. K., Ind. J. Chem, 2001, 40A, 352.
12.
(a) DasA.K., MondalS. K., KarD., and DasM., J. Chem. Res (S)., 1998, 574.
13.
DasA.K., MondalS. K., KarD., and DasM., Int. J. Chem. Kinet., 2001, 33, 173.
14.
LinT.Y., ZengH. W., and ChuoC. M., J. Chinese. Chem. Soc., 1995, 42, 43.
15.
KhanZ., and Kabir-ud-Din, Transition Met. Chem., 2002, 27, 832.
16.
KrumhotzP., J. Am. Chem. Soc., 1951, 73, 3487.
17.
cf. (a) WibergK.B., and LepseP. A., J. Am. Chem. Soc., 1964, 86, 2612.
18.
SrinivasanC., ChellamaniA., and RajagopalS., J. Org. Chem., 1985, 50, 1201.
19.
WatanabeW., and WestheimerF. H., J. Chem. Phys., 1949, 17, 61.
20.
(a) Perez-BenitoJ.F., AriasC., and LamrhariD., J. Chem. Soc. Chem. Commun., 1992, 492. (b) J.F. Perez-Benito and C. Arias, Can. J. Chem., 1993, 71, 649.
21.
BabichO.A., and GouldE. S., Inorg. Chem., 2001, 40, 5708.
22.
HasanF., and RocekJ., Tetrahedron., 1974, 30, 21.
23.
(a) MoyneL., and ThomasG., Anal. Chim. Acta., 1964, 31, 583. (b) Stability Constants (Supplement No. 1, Special Publication No. 25), The Chemical Society: London, 1971, p. 435.
24.
cf. (a) Benito PerezE., and RodenasE., Langmuir., 1991, 7, 232.
25.
SankararajB., RajagopalS., and PitchumaniK., Ind. J. Chem., 1995, 34A, 440.
26.
BuntonC.A., and CerichelliG., Int. J. Chem. Kinet., 1980, 12, 519.
