The preparation of a new photolabile resin for solid-phase peptide synthesis is described.[4- (2-Chloropropionyl) phenyl] acetic acid was used as the handle and was obtained in three steps with an 82% overall yield on starting from phenylacetic acid. The incorporation of the handle to the aminomethyl-resin to form 4-(2-chloropropiony1) phenylacetamidomethyLresin was achieved via its acid chloride or ...