Herein lies a convenient and highly efficient method of olefin isomerization in the presence of RuCl3？3H2O in ionic liquid（IL）. More importantly, RuCl3？3H2O is a robust and recyclable catalyst. Nine cycles of RuCl...Herein lies a convenient and highly efficient method of olefin isomerization in the presence of RuCl3？3H2O in ionic liquid（IL）. More importantly, RuCl3？3H2O is a robust and recyclable catalyst. Nine cycles of RuCl3？3H2O as the catalyst were performed for the isomerization reactions of the selected substrate in IL and MeOH.展开更多
A new carbene ruthenium complex, 1,3-bis（2,6-dimethylphenyl）-4,5-dihydroimidazol-2-ylidene）（PPh3）Cl2-Ru=CHPh, was synthesized and used as catalyst for the metathesis of 1-hexene. The resulting complex exhibited v...A new carbene ruthenium complex, 1,3-bis（2,6-dimethylphenyl）-4,5-dihydroimidazol-2-ylidene）（PPh3）Cl2-Ru=CHPh, was synthesized and used as catalyst for the metathesis of 1-hexene. The resulting complex exhibited very high catalytic activity whose TOF is up to 6680 h^-1. However, at the same time significant olefin isomerization was observed and could be surpressed by changing reaction conditions, such as temperature, time, alkene/Ru molar ratio and solvent.展开更多
A ruthenium carbene complex containing a Zn-porphyrin ligand has been developed. The complex was charac- terized by 1H NMR, IR, HRMS and elemental analysis. The catalytic activity of the ruthenium carbene complex for ...A ruthenium carbene complex containing a Zn-porphyrin ligand has been developed. The complex was charac- terized by 1H NMR, IR, HRMS and elemental analysis. The catalytic activity of the ruthenium carbene complex for olefin metathesis reactions was also investigated. The complex exhibited excellent performance for both ring-closing and cross metathesis reactions at 35 ℃.展开更多
A Grubbs-Hoveyda pre-catalyst having a trimeric resting state based on 2,4,6-trichloro-1,3,5-triazine was syn-thesized and the complex was characterized by NMR,HRMS and elemental analysis.The activity of this complex ...A Grubbs-Hoveyda pre-catalyst having a trimeric resting state based on 2,4,6-trichloro-1,3,5-triazine was syn-thesized and the complex was characterized by NMR,HRMS and elemental analysis.The activity of this complex for ring-closing metathesis(RCM)was investigated.The catalytic system possesses high catalytic activity for many different olefin substrates.展开更多
基金Supported by the National Natural Science Foundation of China(Nos.21072149, 20872108)
文摘Herein lies a convenient and highly efficient method of olefin isomerization in the presence of RuCl3？3H2O in ionic liquid（IL）. More importantly, RuCl3？3H2O is a robust and recyclable catalyst. Nine cycles of RuCl3？3H2O as the catalyst were performed for the isomerization reactions of the selected substrate in IL and MeOH.
文摘A new carbene ruthenium complex, 1,3-bis（2,6-dimethylphenyl）-4,5-dihydroimidazol-2-ylidene）（PPh3）Cl2-Ru=CHPh, was synthesized and used as catalyst for the metathesis of 1-hexene. The resulting complex exhibited very high catalytic activity whose TOF is up to 6680 h^-1. However, at the same time significant olefin isomerization was observed and could be surpressed by changing reaction conditions, such as temperature, time, alkene/Ru molar ratio and solvent.
基金This work was supported by the National Natural Science Foundation of China （grant No. 21102102）.
文摘A ruthenium carbene complex containing a Zn-porphyrin ligand has been developed. The complex was charac- terized by 1H NMR, IR, HRMS and elemental analysis. The catalytic activity of the ruthenium carbene complex for olefin metathesis reactions was also investigated. The complex exhibited excellent performance for both ring-closing and cross metathesis reactions at 35 ℃.
基金supports from NSFC(Nos.21102102,21072149,20872108)are gratefully acknowledged.
文摘A Grubbs-Hoveyda pre-catalyst having a trimeric resting state based on 2,4,6-trichloro-1,3,5-triazine was syn-thesized and the complex was characterized by NMR,HRMS and elemental analysis.The activity of this complex for ring-closing metathesis(RCM)was investigated.The catalytic system possesses high catalytic activity for many different olefin substrates.
