Tetraacyloxy Tellurium Compounds

When the reaction mixtures were heated for several hours, mixtures of tellurium tetrakis[2,2,3,3-tetrafluoropropoxide] and five molar equivalents of carboxylic acid anhydrides produced tellurium tetracarboxylates. The crystalline products were washed with hexane-benzene (1 1) and dried in vacuo  

With phthalic anhydride at 120-140° only two fluoroalkoxy groups were replaced. 

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