Dual gold and photoredox catalysed C–H activation of arenes for aryl–aryl cross couplings
作者:V. Gauchot、D. R. Sutherland、A.-L. Lee
DOI:10.1039/c6sc05469b
日期:——
A mild and fully catalytic aryl–aryl cross coupling via gold-catalysed C–H activation has been achieved by merging gold and photoredox catalysis. The procedure is free of stoichiometric oxidants and additives, which were previously required in gold-catalysed C–H activation reactions. Exploiting dual gold and photoredox catalysis confers regioselectivity via the crucial gold-catalysed C–H activation
Regiodivergent Synthesis and π‐Stacking‐Induced Chiral Self‐Recognition of Hexabenzocoronene‐Based [6]Helicenes
作者:Futo Morita、Juntaro Nogami、Antônio Junio Araujo Dias、Suzuka Kinoshita、Yuki Nagashima、Ken Tanaka
DOI:10.1002/ejoc.202200690
日期:2022.7.21
We have achieved the regiodivergent synthesis of hexabenzocoronene-based [6]helicenes via rhodium-mediated intramolecular [2+2+2] and [2+1+2+1] cycloadditions of triynes followed by Scholl reaction. The resulting HBC-based [6]helicenes exhibited π-stacking-induced chiral self-recognition.