Sulfone complexes

Complex (462) reacts with a large excess of H202 to the fully oxygenated bis(sulfonato) complex (463).12, 1291 With only little excess of H202 or 02, a mixture of (463) and the mono (sulfone) complex (464) is formed. This complex is the only intermediate in the oxygenation reaction that could be isolated, and it is shown to be further reactive towards 02 to yield the fully oxidized product (463) (Equation (10)).1292... 

Ru(II)BINAP was sulfonated and immobilized by the supported-aqueous-phase technique.208-210 Immobilization of Ru(II)BINAP by ion exchange of the sulfonated complex on anionic minerals was also reported.211 The complex is only present at the outer surface and is not intercalated within the interlamel-lar space of the clay. 

Unisulf [Unocal sulfur removal] A process for removing sulfur compounds from petroleum fractions, similar to the Stretford process, but including in the catalytic solution vanadium, a thiocyanate, a carboxylate (usually citrate), and an aromatic sulfonate complexing agent. Developed by the Union Oil Company of California in 1979, commercialized in 1985, and operated in three commercial plants in 1989. 

Figure 1 Plot of the extinction versus concentration for fuchs-in-sulfonate complexes in chloroform at 25°C, = 548 nm. ( ) Sodiumdodecylsulfonate, (A) PS-SO3Li-01, ( ) PS-S03Li-10, ( A) PS-S03Li-40P.

Fig. 8. The [18]crown-6 dimethyl sulfone complex 15) (schematically) a CH - O distances of less than 2.50 A are shown with a dotted line b section of the crystal lattice...

Chromium Complexes with Two or More Sulfonic Acid Groups. The monosul-fonated 1 2 chromium complex dyes were followed by those with two or more sulfonic acid groups. These more highly sulfonated complex dyes had been known since 1932 [24], but were introduced only in 1970 after detailed studies [25], An example is C.I. Acid Blue 193, 15707 [ 75214-58-3] (15). 

The serine sulfonate complex can be treated with lead acetate, the insoluble lead salt can be removed by filtration, and the water-soluble fraction can be recovered. The latter is evaporated to dryness and dissolved in 1 ml of distilled water. To this clear solution is added 10 ml of ethanol, and the mixture is stored at 4°C. Crystals form and are collected by centrifugation and dried in vacuo at room temperature. They have the following characteristics [a] + 14.7° (c, 10, in 1 N HC1) m.p. 220°C (with decomposition). These values compare very favorably with a synthetic L-serine. Synthetic D-serine has an [ ]fc - 14.4°. 

Metal mediated reactions play an important role in organic chemistry. It has recently been found that rare earth trifluoromethane sulfonate complexes may be substituted for conventional Lewis acids in a variety of organic reactions. 

The Pt-catalyzed hydrosilylation of trimethyl silane and alkenols or alkenyl-polyethers lead to nonionic silane surfactants, whereas the addition of allylglycidyl ether to trimethylsilane results in a precursor for ionic derivatives. The epoxy group is highly reactive towards nucleophilic agents and can be easily transformed into quaternary ammonium, betaine, or sulfonate complexes. Additionally, cation-anion complexes can be formed by the transformation of two equivalents of epoxy silane with one equivalent of trialkyl ammonium hydrogen sulfite. The reaction of hydroxyalkyltrimethylsilane... 

When organic resin-type anion exchangers like Amberlite IRA 400, Amberlite IRA 900 and Lewatite type I in their Cl-form are used as carrier for the sulfonated complex, no activity is observed at all, indicating that the properties of these materials are not compatible with the hydrogenation of MAA over Ru(II)-BINAP complexes. The ruthenium content of these catalysts was found to be analogous to the LDH s... 

Petroleum Sulfonates Products of the refining of selected petroleum fractions with concentrated sulfuric acid or oleum, in the production of white oils. Metal or ammonium salts of sulfonated complex cycloaliphatic and aromatic hydrocarbons. 

The similar C-H o-bond activation by platinum(II) sulfonate complex was theoretically investigated [36-38]. This is a model of the methane-to-methanol conversion by the platinum(II) complex in dry sulfuric acid experimentally reported [3]. There are two possible reaction courses in the C-H o-bond activation one is the oxidative addition of the C-H o-bond to the platinum(II) complex and the other is the metathesis of the C-H o-bond with the Pt-OSOjH moiety. Hush et al. proposed that the C-H o-bond activation took place through the oxidative addition to the platinum(II) complex [36]. This is not surprising because the oxidative addition of methane to the coordinatively unsaturated platinum(II) complex is not very difficult, as discussed above. However, Ziegler et al. reported that the metathesis could take place with the similar activation barrier to that of the oxidative addition [37]. Recently, Goddard et al. clearly concluded that the metathesis more easily proceeded than the oxidative addition in sulfuric acid [38]. They investigated this reac-... 

K. West, L. Bay, M.M. Nielsen, Y. Velmumgu, and S. Skaarup, Electronic conductivity of polypyrrole-dodecyl benzene sulfonate complexes, J. Phys. Chem. B, 108(39), 15001-15008 (2004). 

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