A number of routes to N-bis (2-fluoroethyl) glycine (III a) were explored. Of these, condensation between N-bis (2-fluoroethyl) amine and bromoacetic acid in tetrahydrofuran proved to be the most satisfactory. Reaction between a carbonic anhydride derivative of, for example, glycine III a and the appropriate aromatic amine provided the glycine amides summarized by structures IV b-IV i. Treatment of N-bis (2-chloroethyl) glycine ...