Fluorinated isocyanates - reactions with fluorinated anhydrides,acids, and related substrates

$\text{F}$-Phenylisocyanate reacts with cyclic or linear anhydrides with the aid of catalysts to form $\text{F}$-(N-arylimides) in good yields. Similar reactions with fluorinated acids lead directly to amides. This isocyanate undergoes smooth reaction with various substrates (hexafluoroacetone, trioctylphospine oxide, and itself). Several reactions between $\text{F}$-aryl and $\text{F}$-alkyl isocyanates are compared. Reaction between the latter and $\text{F}$-anhydrides or acids gives products derived from fluoride ion transfer reactions.