Alkoxy-or (acyloxy)(2, 2, 2-trifluoroethoxy) triphenylphosphoranes which were prepared in situ by the ligand exchange of bis (2, 2, 2-trifluoroethoxy) triphenylphosphorane with alcohols or carboxylic acids were found to behave as potential alkylating or acylating reagents for the preparation of a variety of esters, amides, sulfides, and ketones.