Chen Wen-Bo, Xing Chun-Hui, Dong Jie, Hu Qiao-Sheng
Department of Chemistry, College of Staten Island of the City University of New York, Staten Island, New York, 10314 and the Ph.D. Program in Chemistry, the Graduate Center of the City University of New York, New York, NY 10016, United States.
Adv Synth Catal. 2016 Jun 30;358(13):2072-2076. doi: 10.1002/adsc.201600205. Epub 2016 Jun 7.
The use of electron-poor, fluoro-containing arylboronic acids as general coupling partners for nickel(0) /tricyclohexylphosphine-catalyzed cross-coupling of aryl arenesulfonates is described. Electron-poor fluoro-containing arylboronic acids were found to react, faster than electron-rich/neutral arylboronic acids, with (4-methoxyphenyl)(4-methylbenzenesulfonato-κ)bis(tricyclohexylphosphine)nickel. Bis(1,5-cyclooctadiene)nickel(0)/tricyclohexylphosphine, (4-methoxyphenyl)(4-methylbenzenesulfonato-κ)bis(tricyclohexylpho sphine)nickel and bis(tricyclohexylphosphine)nickel (II) bromide were all found to be efficient catalysts/catalyst precursors.
本文描述了贫电子含氟芳基硼酸作为镍(0)/三环己基膦催化芳基芳基磺酸酯交叉偶联的通用偶联伙伴的应用。研究发现,贫电子含氟芳基硼酸与(4-甲氧基苯基)(4-甲基苯磺酸根-κ)双(三环己基膦)镍的反应速度比富电子/中性芳基硼酸更快。双(1,5-环辛二烯)镍(0)/三环己基膦、(4-甲氧基苯基)(4-甲基苯磺酸根-κ)双(三环己基膦)镍和双(三环己基膦)镍(II)溴化物均被发现是有效的催化剂/催化剂前体。