Rhodium-Catalyzed Enantioselective Synthesis, Crystal Structures, and Photophysical Properties of Helically Chiral 1,1′-Bitriphenylenes

The highly enantioselective synthesis of helically chiral 1,1′-bitriphenylenes has been achieved via rhodium-catalyzed double [2 + 2 + 2] cycloaddition of biaryl-linked tetraynes with 1,4-diynes (up to 93% ee). Crystal structures and photophysical properties of these helically chiral 1,1′-bitriphenylenes have also been studied.本研究通过铑催化联芳基连接的四炔烃与1,4-二炔烃的双[2+2+2]环加成反应，成功实现了螺旋手性(helically chiral)1,1'-联三苯烯(1,1′-bitriphenylenes)的高对映选择性合成，产物对映体过量值最高可达93% ee。同时，本研究还对该类螺旋手性1,1'-联三苯烯的晶体结构与光物理性质展开了系统研究。