Cesium iodide reduction

Nitro-4-(trifluoromethyl)-phenol 42 (Scheme 17) in reaction with 2-bromo-2-methyl-propionamide in the presence of cesium carbonate and cesium iodide in acetonitrile afforded 2-hydroxy-2-methylpropionamide 43, apparently via derivative 44 as the intermediate [32]. Amide 44, prepared on a circuitous route, on reduction with borane-dimethylsulfide complex, gave amine 45 as the only isolated product. The parent 2-hydroxy-2-methyl-W-(2-... 

During the processing of pollucite the ground mineral is dissolved and silica and alumina are removed from the solution. Salts of alkali metals are present in the filtrate. The separation of these was once very time consuming, as it had to be done with fractional crystalHzation. Nowadays an ion-exchange technique is used, which makes the separation fast and simple. Cesium hydroxide is prepared from the pure cesium solution, and is the base for cesium chloride, iodide, carbonate and other compounds. Cesium metal is prepared by reduction of cesium chloride with calcium metal. 

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