Trimacrocyclic hexasubstituted benzene linked by labile octahedral [X(CHCl3)6]- clusters

Ni0-Catalyzed Regioselective [2 + 2 + 2] Cyclotrimerization of 1,3-Diynes: An Expeditious Synthesis of Hexasubstituted Alkynyl Benzenes

In the present work, we demonstrate a regioselective [2 + 2 + 2] cyclotrimerization of 1,3-diynes catalyzed by Ni0 to provide hexasubstituted benzenes (HSBs). HSBs have significant applications as functional materials and pharmaceuticals. The present protocol exhibited remarkable versatility, transforming 1,3-diynes with diverse alkyl, aryl, and heterocyclic groups to the corresponding HSBs. With the help of control experiments and density functional theory (DFT), the mechanism of the reaction and the origin of regioselectivity were elucidated.

Trimacrocyclic hexasubstituted benzenes for recognition of guanidinium and their anti-cancer and antimicrobial activities

We report the facile synthesis of two trimacrocyclic hexasubstituted benzenes for selective guanidinium recognition and extraction, along with their anti-cancer and antimicrobial activities.