Influence of Acid Catalyst on the Synthesis of trans‐Porphyrins and Crystal Structure of a 5‐(Pyren‐1‐yl)dipyrromethane

Abstract

AbstractA family of trans‐porphyrins (A2B2, A2BC and A2C2), including fewer fused cyclic aromatics, was synthesized using 5‐mesityldipyrromethane under negligible scrambling reaction conditions in high yields (15–48 %) with BF3(OEt2)/EtOH relative to that in trifluoroacetic acid (12–22 %) in CHCl3. The push‐pull trans‐A2BC, Zn(II)‐carboxy porphyrins were prepared from their ester porphyrins and examined their fluorescence and electrochemical redox properties. In addition, the synthesis and single‐crystal X‐ray structure of a 5‐(pyren‐1‐yl)dipyrromethane are also reported.