This paper presents Sonogashira coupling reaction of aryl bromides with protected homopropargyl alcohols such as tert-butyldimethyl(1-phenylbut-3-ynyloxy)silane and tert-butyldimethyl(1-(2,4-dichlorophenyl)but-3-ynylo...This paper presents Sonogashira coupling reaction of aryl bromides with protected homopropargyl alcohols such as tert-butyldimethyl(1-phenylbut-3-ynyloxy)silane and tert-butyldimethyl(1-(2,4-dichlorophenyl)but-3-ynyloxy)silane in piperidine catalyzed by PdCl2/PPh3 without copper(I). The coupling products, disubstituted acetylene, are obtained in good or excellent yields. These products can be further used for the synthesis of 2,5-disubstituted 3-bromofurans.展开更多
Novel organometallic copolymers with Mn-Re binuclear transition-metal groups in the side chain are synthesized and characterized.The structure and properties of the copolymers are characterized by GPC,DSC,TG,NMR,FT-IR...Novel organometallic copolymers with Mn-Re binuclear transition-metal groups in the side chain are synthesized and characterized.The structure and properties of the copolymers are characterized by GPC,DSC,TG,NMR,FT-IR,UV-Vis spectra and elemental analysis.The glass transition temperature and UV-Vis spectra properties of these three organometallic copolymers are found to be different from the normal polystyrene.New synthetic strategy for the synthesis of or-ganometallic copolymer is developed.展开更多
基金Supported by the National Natural Science Foundation of China (Grant No. 20421202 & 20372033)
文摘This paper presents Sonogashira coupling reaction of aryl bromides with protected homopropargyl alcohols such as tert-butyldimethyl(1-phenylbut-3-ynyloxy)silane and tert-butyldimethyl(1-(2,4-dichlorophenyl)but-3-ynyloxy)silane in piperidine catalyzed by PdCl2/PPh3 without copper(I). The coupling products, disubstituted acetylene, are obtained in good or excellent yields. These products can be further used for the synthesis of 2,5-disubstituted 3-bromofurans.
基金This work was supported by the State Key Laboratory of Polymer Material With Function of Ad-sorption and Extraction.
文摘Novel organometallic copolymers with Mn-Re binuclear transition-metal groups in the side chain are synthesized and characterized.The structure and properties of the copolymers are characterized by GPC,DSC,TG,NMR,FT-IR,UV-Vis spectra and elemental analysis.The glass transition temperature and UV-Vis spectra properties of these three organometallic copolymers are found to be different from the normal polystyrene.New synthetic strategy for the synthesis of or-ganometallic copolymer is developed.
