Chemistry Letters, Vol.49, No.6, 689-692, 2020
Copper-catalyzed Site-selective Direct Arylation of Triptycene
A site-selective direct C-H arylation protocol for the triptycene skeleton is developed using copper catalyst and diaryliodonium reagents. With the aid of directing groups, C3-symmetric trisubstituted triptycenes are selectively synthesized, and the structure was determined by X-ray diffraction analysis. Further derivatization of the installed bromo functionalities is also described.