Aerobic oxidation of alcohols to carboxylic acids and ketones in water using palladium species supported on an ordered mesoporous polypyrrole/carbon nanocomposite.

An efficient and economical protocol for the synthesis of 5-substituted-1H-tetrazoles from various nitriles and sodium azide is reported using nano TiO 2 /SO 4 2À as an effective heterogeneous catalyst. A wide variety of aryl nitriles underwent [3 + 2] cycloaddition to afford tetrazoles in good to excellent yields.

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