Stereoselective Synthesis of (E)- and (Z)-.BETA.-Bromostyrene Containing Trifluoromethyldiazirine for Photoaffinity Labeling

Summary A convenient procedure for the synthesis of (E)- and (Z)-beta-bromostyrene containing trifluoromethyldiazirine is described, which involves the stereoselective reduction of the corresponding trifluoromethyldiazirinyl beta,beta-dibromostyrene without damaging the photophor. The synthetic route easily introduced deuterium, which can be utilized for the detection of a photolabeled component by MS spectrometry, after construction of a trifluoromethyldiazirinyl skeleton.