Through Modification of the Organic Group

Treatment of (2-methyl-3-allyl-l-oxa-3-azoniacyclopent-2-en-5-yl)methyltetrachloro-tellurate(TV) with water at 25° caused the oxazoline ring to open and the acetyl group to be cleaved. 2-Hydroxy-4-azoniahept-6-en-l-yltetrachlorotellurate(IV) was isolated in 65% yields 

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From Other Dialkyl Ditellurium Compounds through Modification of the Organic Group... 

The selectivity of activated carbons for adsorption and catalysis is dependent upon their surface chemistry, as well as upon their pore size distribution. Normally, the adsorptive surface of activated carbons is approximately neutral, such that polar and ionic species are less readily adsorbed than organic molecules. For many applications it would be advantageous to be able to tailor the surface chemistry of activated carbons in order to improve their effectiveness. The approaches that have been taken to modify the type and distribution of surface functional groups have mostly involved the posttreatment of activated carbons or modification of the precursor composition, although the synthesis route and conditions can also be employed to control the properties of the end product. Posttreatment methods include heating in a controlled atmosphere and chemical reaction in the liquid or vapor phase. It has been shown that through appropriate chemical reaction, the surface can be rendered more acidic, basic, polar, or completely neutral [11]. However, chemical treatment can add considerably to the product cost. The chemical composition of the precursor also influences the surface chemistry and offers a potentially lower cost method for adjusting the properties of activated... 

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