Synthesis and Characterization of a Pentiptycene‐Derived Dual Oligoparaphenylene Nanohoop

Structural designs by combining the oligoparaphenylene‐derived nanohoops with other functional organic building blocks should lead to novel molecular architectures with intriguing properties. Herein, the synthesis of a pentiptycene‐derived chiral dual nanohoop molecule has been achieved with key steps including ring expansion through dianthracene cycloreversion and transannular [4+2] cycloaddition across a 64‐membered macrocycle. The crystal structure of the nanohoop molecule displays ordered packing pattern with long‐range channels in the solid‐state. In addition, non‐racemizable enantiomers of the nanohoop have been obtained through resolution, exhibiting promising chiroptical properties.

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