Highly regioregular, head-to-tail coupled poly（3-octylesterthiophene） was synthesized by the Pd-catalysed oxidative C--H/C--H coupling polycondensation. The regioregularity of polymer products was confirmed by the 1...Highly regioregular, head-to-tail coupled poly（3-octylesterthiophene） was synthesized by the Pd-catalysed oxidative C--H/C--H coupling polycondensation. The regioregularity of polymer products was confirmed by the 1H-NMR technique. Furthermore, the effects of various reaction factors including polymerization temperature, solvents and catalysts etc. on the yield, molecular weight and structural regioregularity of the resultant polymers were systematically studied. The optical, electrochemical and crystallization properties of the resultant P3OET with different HT regioregularities in solution and film state were studied by UV-Vis and fluorescent spectroscopy, cyclic voltammetry and X-ray diffraction （XRD）, resepectively.展开更多
Catalytic direct functionalization of unreactive C--H bonds represents a sustainable and more atom economical transformation process. Porphyrin and pbthalocyanine derivatives show promising catalytic activities in dir...Catalytic direct functionalization of unreactive C--H bonds represents a sustainable and more atom economical transformation process. Porphyrin and pbthalocyanine derivatives show promising catalytic activities in direct C-- H arylation reactions. These reactions share a common C--C bond formation process via homolytic radical substi- tution. This review summarizes the catalytic direct C--H arylation reactions catalyzed by metalloporphyrins, free base porphyrins and free base phthalocyanines.展开更多
A novel domino cross dehydrogenative coupling of 2-aryl acetals with unmodified ketones has been developed, using DDQ as both the oxidant and reactant precursor.
基金financially supported by the National Natural Science Foundation of China(Nos.21604063 and 51373122)China Postdoctoral Science Foundation(No.2016M591392)
文摘Highly regioregular, head-to-tail coupled poly（3-octylesterthiophene） was synthesized by the Pd-catalysed oxidative C--H/C--H coupling polycondensation. The regioregularity of polymer products was confirmed by the 1H-NMR technique. Furthermore, the effects of various reaction factors including polymerization temperature, solvents and catalysts etc. on the yield, molecular weight and structural regioregularity of the resultant polymers were systematically studied. The optical, electrochemical and crystallization properties of the resultant P3OET with different HT regioregularities in solution and film state were studied by UV-Vis and fluorescent spectroscopy, cyclic voltammetry and X-ray diffraction （XRD）, resepectively.
文摘Catalytic direct functionalization of unreactive C--H bonds represents a sustainable and more atom economical transformation process. Porphyrin and pbthalocyanine derivatives show promising catalytic activities in direct C-- H arylation reactions. These reactions share a common C--C bond formation process via homolytic radical substi- tution. This review summarizes the catalytic direct C--H arylation reactions catalyzed by metalloporphyrins, free base porphyrins and free base phthalocyanines.
文摘A novel domino cross dehydrogenative coupling of 2-aryl acetals with unmodified ketones has been developed, using DDQ as both the oxidant and reactant precursor.
