Facile C H arylation using catalytically active terminal sulfurs of 2 dimensional molybdenum disulfide
作者:Eunhee Hwang、Sae Mi Lee、Sora Bak、Hee Min Hwang、Hyunjung Kim、Hyoyoung Lee
DOI:10.1016/j.tetlet.2018.09.054
日期:2018.10
metal dichalcogenides that have catalytically active edge functional groups was described. The terminal sulfur groups could effectively catalyze a formation of an azo-linked intermediate with aryl diazonium salts, leading to produce heteroarenes with good yields. This novel methodology using bulk 2D transition metal dichalcogenides that have catalytically active edge functional groups can apply for various
Cp*Rh(<scp>iii</scp>) and Cp*Ir(<scp>iii</scp>)-catalysed redox-neutral C–H arylation with quinone diazides: quick and facile synthesis of arylated phenols
作者:Shang-Shi Zhang、Chun-Yong Jiang、Jia-Qiang Wu、Xu-Ge Liu、Qingjiang Li、Zhi-Shu Huang、Ding Li、Honggen Wang
DOI:10.1039/c5cc03187g
日期:——
Cp*Rh(iii)- and Cp*Ir(iii)-catalysed direct C–H arylation with quinone diazides provides a facile and redox-neutral access to arylated phenols.
Transition-Metal-Free Decarboxylative Arylation of 2-Picolinic Acids with Arenes under Air Conditions
作者:Xitao Zhang、Xiujuan Feng、Chuancheng Zhou、Xiaoqiang Yu、Yoshinori Yamamoto、Ming Bao
DOI:10.1021/acs.orglett.8b03043
日期:2018.11.16
transition-metal-free, and direct decarboxylative arylation of 2-picolinic acids with simple arenes is described. The oxidativedecarboxylative arylation of 2-picolinic acids with arenes proceeds readily via N-chloro carbene intermediates to afford 2-arylpyridines in satisfactory to good yields under transition-metal-free conditions. This new type of decarboxylative arylation is operationally simple
Ligand-promoted ruthenium-catalyzed <i>meta</i> C–H chlorination of arenes using <i>N</i>-chloro-2,10-camphorsultam
作者:Zhoulong Fan、Heng Lu、Zhen Cheng、Ao Zhang
DOI:10.1039/c8cc03195a
日期:——
practical meta C–H chlorination protocol is established via a Ru(0)-catalyzed ortho-metalation strategy. The use of N-chloro-2,10-camphorsultam as a newchlorinating agent is crucial for the success of the current reaction and an N-heterocyclic carbene (NHC) ligand could significantly enhance the reactivity of the catalytic transformation. The mechanistic studies reveal that an unusual ortho C–H ruthenation
Nickel-Catalyzed Reductive 2-Pyridination of Aryl Iodides with Difluoromethyl 2-Pyridyl Sulfone
作者:Wenjun Miao、Chuanfa Ni、Pan Xiao、Rulong Jia、Wei Zhang、Jinbo Hu
DOI:10.1021/acs.orglett.0c03939
日期:2021.2.5
A novel nickel-catalyzed reductive cross-coupling between aryl iodides and difluoromethyl 2-pyridyl sulfone (2-PySO2CF2H) enables C(sp2)–C(sp2) bondformationthrough selective C(sp2)–S bond cleavage, which demonstrates the new reactivity of 2-PySO2CF2H reagent. This method employs readily available nickel catalyst and sulfones as cross-electrophile coupling partners, providing facile access to biaryls