Synthesis of C2-Symmetric Benzimidazolium Salts and Their Application in Palladium-Catalyzed Enantioselective Intramolecular α-Arylation of Amides
作者:Weiping He、Wei Zhao、Bihui Zhou、Haifeng Liu、Xiangrong Li、Linlin Li、Jie Li、Jianyou Shi
DOI:10.3390/molecules21060742
日期:——
A series of C₂-symmetric chiral benzimidazoliumsalts, the precursor of N-heterocycliccarbeneligands, were designed and synthesized from 1,2-dibromobenzene. In situ prepared corresponding carbenes were tested in the asymmetric palladium-catalyzed intramolecular α-arylation of amides, affording chiral diarylmethanols with high yields and moderate enantioselectivities.