Intramolecular Remote C–H Activation via Sequential 1,4-Palladium Migration To Access Fused Polycycles
作者:Panpan Li、Qiuyu Li、He Weng、Jiaming Diao、Hequan Yao、Aijun Lin
DOI:10.1021/acs.orglett.9b02392
日期:2019.9.6
conveyor has been described. This reaction provides an efficient route to construct diverse polycyclic frameworks in moderate to good yield via palladium-catalyzed remote C-H activation/alkene insertion, arylation, alkenylation, and the Heck reaction. The preliminary mechanistic studies revealed that the 1,4-palladium migration process was reversible.
A broadly applicable rhodium-catalyzed direct ortho-arylation of anilines with (hetero)aryl halides based on readily available aminophosphines as traceless directing groups is reported. The ortho-arylated anilines could be obtained in high yields, without any competing diarylation and with full regioselectivity. The catalytic cycle was elucidated by DFT and supporting experiments.
Decarbonylative/decarboxylative [4 + 2] annulation of phthalic anhydrides and cyclic iodoniums towards triphenylenes
作者:Lingyu Huang、Rongrong Xie、Chaoying Wen、Yanyan Yang、Yiwen Wang、Shiyan Ren、Bin Huang、Shiqing Li
DOI:10.1039/d2ob00500j
日期:——
A palladium-catalyzed decarbonylative/decarboxylative annulation of phthalic anhydrides with cyclic diaryliodonium salts to synthesize triphenylenes has been developed.