Synthesis of Chiral Sulfoxides via Pd(II)-Catalyzed Enantioselective C–H Alkynylation/Kinetic Resolution of 2-(Arylsulfinyl)pyridines
作者:Tao Zhou、Meng-Xue Jiang、Pu-Fan Qian、Qi-Jun Yao、Xue-Tao Xu、Kun Zhang、Bing-Feng Shi
DOI:10.1021/acs.orglett.1c02918
日期:2021.10.15
A Pd(II)-catalyzed enantioselective C–H alkynylation of 2-(arylsulfinyl)pyridines via kinetic resolution using cheap and commercially available l-pGlu-OH as a chiral ligand is reported. A wide range of 2-(arylsulfinyl)pyridines were compatible with this protocol, giving the alkynylation products and recovered sulfoxides in high yields with high enantioselectivities (up to 99% ee). Furthermore, the
Synthesis of Pyridylsulfonium Salts and Their Application in the Formation of Functionalized Bipyridines
作者:Vincent K. Duong、Alexandra M. Horan、Eoghan M. McGarrigle
DOI:10.1021/acs.orglett.0c03048
日期:2020.11.6
arylation of pyridylsulfides with good functional group tolerance was developed. To demonstrate synthetic utility, the resulting pyridylsulfonium salts were used in a scalable transition-metal-free coupling protocol, yielding functionalizedbipyridines with extensive functional group tolerance. This modular methodology permits selective introduction of functional groups from commercially available pyridyl
Intramolecular C−H Activation as an Easy Toolbox to Synthesize Pyridine‐Fused Bipolar Hosts for Blue Organic Light‐Emitting Diodes
作者:Fei Wang、Luoqiang Zhang、Weiguo Han、Zhengyang Bin、Jingsong You
DOI:10.1002/anie.202205380
日期:2022.8.8
Iridium-catalyzed intramolecular oxidative C−H/C−H coupling reactions have been developed to rapidly build a library of structurally and functionallydiverse benzoheteroaromatic-fused pyridine skeletons. This new synthetic strategy allowed to explore and highlight the high performance of bipolar host materials for blue OLEDs.