Improved preparation of methyl bis(2,2,2-trifluoroethoxy)-bromophosphonoacetate for the stereoselective synthesis of (E)-α-bromoacrylates.

ABSTRACT

We have established an efficient method for preparing methyl bis(2,2,2-trifluoroethoxy)bromophosphonoacetate, which we developed for the stereoselective synthesis of (E)-α-bromoacrylates. This improved method enables the reagent to be prepared reproducibly in one step from methyl bis(2,2,2-trifluoroethoxy)phosphonoacetate.