... of aromatics and a side chain of α-amino acids derivatives, it is easy to synthesize optically pure ... HCl; (d) R 2 COCl or (R 2 CO) 2 O, 1,8-diazabicyclo-[5.4.0]undec-7 ... acid derivatives with organic metal compounds, in the presence of palladium catalysts, numerous synthesis of aryl ...