New synthesis and reactions of perfluoro-tert-butyl chloroformate

Add time:09/02/2019    Source:sciencedirect.com

A new synthesis of perfluoro-tert-butyl chloroformate (perfluoro-tert- butoxycarbonyl chloride) is based on the reaction of potassium perfluoro- tert-butoxide with one equivalent of phosgene in xylene or mesitylene. Perfluoro-tert-butyl chloroformate reacts readily with hydroxy, sulfhydryl and amino compounds to give the corresponding perfluoro-tert-butyl alkyl carbonates, thiolcarbonates or carbamates, respectively. Dialkyl carbonates, diaryl carbonates, and symmetrically substituted ureas are formed as by-products and, with some compounds, as exclusive products. Primary amines form isocyanates.

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