Simple and stereocontrolled preparation of benzoylated phenylalanine using Friedel–Crafts reaction in trifluoromethanesulfonic acid for photoaffinity labeling
Simple and stereocontrolled preparation of benzoylated phenylalanine derivatives from optically pure phenylalanine using Friedel-Crafts reaction in trifluoromethanesulfonic acid (TfOH) is reported; these derivatives are useful for photoaffinity labeling. Protected or unprotected phenylalanine derivatives were converted to benzoyl derivatives in TfOH at room temperature in a short time without loss of optical purity. The reaction condition was ...
