Of sulfur-containing functions

Sulfation and Sulfonation. a-Olefin reactions involving the introduction of sulfur-containing functional groups have commercial importance. As with many derivatives of olefins, several of these products have appHcations in the area of surfactants (qv) and detergents. Typical sulfur reagents utilized in these processes include sulfuric acid, oleum, chlorosulfonic acid, sulfur trioxide, and sodium bisulfite. 

Groups. Supplement S The Chemistry of Sulfur-Containing Functional Groups (S. Patai and Z. Rappoport, eds.), p. 659. Wiley, New York, 1993. 

Vairavamurthy, A., Maletic, D., Wang, S., Manowitz, B., Eglinton, T., and Lyons, T. (1997). Characterization of sulfur-containing functional groups in sedimentary humic substances by X-ray absorption near-edge spectroscopy. Energy Fuels 11,546-553. 

We have already met a number of sulfur-containing functional groups and it might be useful to list them for reference. 

The advantages of sulfur-based olefination reactions in syntheses of complex targets stem from the relative ease of generating the C - S bond in various building blocks and from the compatibility of sulfur-containing functional groups with many chemical transformations. 

Chatgilialoglu, C. Guerra, M. Thiyl Radicals In Supplement S, The Chemistry of Sulfur Containing Functional Groups, Patai, S. Rappoport, Z., Eds. John Wiley Chichester, 1993, p. 363. 

Caro et al. [120] prepared fuel cell membranes by directly introducing sulfonic acid groups to PI LE films by EB irradiation. Pi EE films were irradiated in water under atmospheric conditions and subsequently treated with fuming sulfuric add. Evidence of the presence of sulfur-containing functional groups was presented. However, no details on the basic properties of these manbranes and their fuel cell performance were reported. A summary of previous studies on radiation-grafled PCMs based on PTFE fihns and their properties are presented in Table 5.5. 

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