Green synthesis of fluorinated biaryl derivatives via thermoregulated ligand/palladium-catalyzed Suzuki reaction
作者:Ning Liu、Chun Liu、Zilin Jin
DOI:10.1016/j.jorganchem.2011.04.007
日期:2011.7
and material science due to their unique physical properties. This paper reports an efficient and environmentally benign protocol for the Suzukireaction of aryl halides with fluorinated arylboronic acids over a thermoregulated ligand/palladium catalyst using water as sole medium, affording a variety of fluorinated biaryls, including fluorinated liquid crystals, in excellent yields. The catalyst could
A novel thermoregulated phosphine ligand used for the Rh-catalyzed hydroformylation of mixed C11–12 olefins in aqueous/organic biphasic system
作者:Zhi Jiang Ji、Jing Yang Jiang、Yan Hua Wang
DOI:10.1016/j.cclet.2010.01.020
日期:2010.5
A novel thermoregulated phosphine ligand Ph2P(CH2CH2O)nCH3 (n = 22) was synthesized and used for the Rh-catalyzed hydroformylation of mixed C11–12 olefins in aqueous/organic biphasic system. Under the optimized conditions, pressure = 5 MPa (H2:CO = 1:1), phosphine/Rh = 13 (molar ratio), reaction time = 6 h and temperature = 130 °C, the conversion of C11–12 olefins and the yield of aldehyde are 99%
Thermoregulated Copper-Free Sonogashira Coupling in Water
作者:Ning Liu、Chun Liu、Qiang Xu、Zilin Jin
DOI:10.1002/ejoc.201100367
日期:2011.8
The Sonogashiracross-couplingreaction between aryl halides and terminal alkynes was carried out smoothly in water over a thermoregulated ligand–palladium catalyst under copper-free conditions, resulting in good to excellent yields. The Sonogashirareaction was sensitive to the electronic nature of the substituents on the aryl halides. Aryl halides with an electron-withdrawing group showed higher