An Efficient Imine Photocyclization as an Alternative to the Pictet-Spengler Reaction for the Synthesis of AzaBenzannulated Perylenediimide Dyes
2020
AzaBenzannulated PDI (AzaBPDI) dyes were synthesized in high yields via a
new reaction sequence involving an imine condensation followed by
visible light-induced photocyclization. The large scope and efficiency
of this alternative to the Pictet-Spengler reaction is demonstrated, and
allows the easy preparation of dimeric AzaBPDI as potential
non-fullerene acceptors for organic solar cells.
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