Pentafluoroethylbenziodoxole (BIX-C2F5): A Shelf-Stable Reagent for Pentafluoroethylation of β-Ketoesters and Arylboronic Acids.

An improved method for the preparation of pentafluoroethylating reagent pentafluoroethyl-substituted benziodoxole (BIX-C2F5) was described. Under mild conditions, BIX-C2F5 was able to react with β-ketoesters or aryl/heteroaryl boronic acids to generate pentafluoroethylated compounds in good yields.