- Air-stable μ2-hydroxyl bridged cationic binuclear complexes of zirconocene perfluorooctanesulfonates: their structures, characterization and application
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Three air-stable zirconocene perfluoro-octanesulfonates were successfully synthesized by treatment of C8F17SO3Ag with (RCp)2ZrCl2 [R = H, n-Bu, t-Bu]. According to X-ray analysis, they have μ2-hydroxyl bridged cationic binuclear structures: (i) [CpZr(OH2)3]2(μ2-OH)2(OSO2C8F17)4·2THF·4H2O (1a·2THF·4H2O), (ii) [n-BuCpZr(OH2)3]2(μ2-OH)2(OSO2C8F17)4·6H2O (2a·6H2O), and (iii) [t-BuCpZr(OH2)3]2(μ2-OH)2(OSO2C8F17)4·2C3H6O·8H2O (3a·2C3H6O·8H2O). The ligands of water and organic molecules in the complexes originated from the moist air and solvent during their recrystallization. These complexes were characterized with different techniques, and found to show water tolerance, air/thermal stability as well as strong Lewis acidity. Moreover, the complexes showed highly catalytic activity in various reactions of C–C bond formation. With good recyclability, they should find wide applications in organic chemistry.
- Zhang, Xiaohong,Xu, Xinhua,Li, Ningbo,Liang, Zhiwu,Tang, Zilong
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supporting information
p. 1926 - 1932
(2018/03/21)
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- Synthesis and structure of an air-stable bis(isopropylcyclopentadienyl) zirconium perfluorooctanesulfonate and its catalyzed benzylation of 1,3-dicarbonyl derivatives with alcohols
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An air-stable uninuclear complex of bis(isopropylcyclopentadienyl) zirconium perfluorooctane sulfonate (1a·H2O·3THF) was successfully synthesized by the reaction of (i-PrCp)2ZrCl2 with C17SO3Ag. The c
- Zhang, Xiaohong,Qiu, Renhua,Zhou, Congcong,Yu, Jingxing,Li, Ningbo,Yin, Shuangfeng,Xu, Xinhua
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p. 1011 - 1017
(2015/01/30)
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- Intra- and intermolecular alkylation of N, O-acetals and π-activated alcohols catalyzed by in situ generated acid
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Intramolecular and intermolecular alkylations of carbocation precursors of limited ionization ability, principally N,O-acetals, without the use of an exogenous reagent have been developed. The reactions are carried out in 1,1,2,2-tetrachloroethane (TCE) a
- Hamon, Melanie,Dickinson, Niall,Devineau, Alice,Bolien, David,Tranchant, Marie-Jose,Taillier, Catherine,Jabin, Ivan,Harrowven, David C.,Whitby, Richard J.,Ganesan,Dalla, Vincent
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p. 1900 - 1912
(2014/04/03)
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- Catalytic alkylation of benzylic C-H bonds with 1,3-dicarbonyl compounds utilizing oxygen as terminal oxidant
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The oxidative alkylation of benzylic C-H bonds with 1,3-dicarbonyl compounds was developed using oxygen as the terminal oxidant in the presence of catalytic amounts of FeCl2, CuCl and NHPI.
- Correia, Camille A.,Li, Chao-Jun
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experimental part
p. 1172 - 1175
(2010/04/23)
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- FeCl2-catalyzed selective C-C bond formation by oxidative activation of a benzylic C-H bond
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(Chemical Equation Presented) Any old iron: Readily available and non-toxic FeCl2 effectively catalyzes C-C bond formation by oxidative activation of benzylic C-H bonds in the presence of tert-butyl peroxide as a stoichiometric oxidant (see sch
- Li, Zhiping,Cao, Lin,Li, Chao-Jun
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p. 6505 - 6507
(2008/09/17)
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