An imine-based nitrogen-rich covalent-organic framework(COF)was successfully synthesized using two tri-angular building units under solvothermal reaction condition.The gas adsorption properties of the obtained micro-p...An imine-based nitrogen-rich covalent-organic framework(COF)was successfully synthesized using two tri-angular building units under solvothermal reaction condition.The gas adsorption properties of the obtained micro-porous nitrogen-rich COF were investigated.The results indicated that the activated COF material presented good up take capabilities of CO_(2) and CH_(4) at 61.2 and 43.4 cm^(3)·g^(−1)at 1 atm and 273 K,respectively,showing its applica-tion potential in selective gas capture and separation.展开更多
of main observation and conclusion A highly efficient catalytic system for the N-arylation reactions of(hetero)aryl chlorides and nitrogen heterocycles with a copper(l)complex containing a 1,10-phenanthroline analogue...of main observation and conclusion A highly efficient catalytic system for the N-arylation reactions of(hetero)aryl chlorides and nitrogen heterocycles with a copper(l)complex containing a 1,10-phenanthroline analogue N-heterocyclic carbene(NHC)has been reported.The complex was characterized by^lH NMR and^13C NMR spectroscopy and elemental analysis,and its structure was determined by single-crystal X-ray diffraction.The NHC-copper(l)complex was employed as pre-catalyst for Ullmann type N-arylation reactions of(hetero)aryl chlorides with various azoles.A variety of hindered and functionalized azoles and(hetero)aryl chlorides were transformed in good to excellent yields.展开更多
基金supported by the National Research Foundation (NRF),Prime Minister’s Office,Singapore under its NRF Fellowship (NRF2009NRF-RF001-015)Campus for Research Excellence and Technological Enterprise (CREATE)Programme-Singapore Peking University Research Centre for a Sustainable Low-Carbon Futurethe NTU-A*Star Centre of Excellence for Silicon Technologies (A*Star SERC No.:1123510003).
文摘An imine-based nitrogen-rich covalent-organic framework(COF)was successfully synthesized using two tri-angular building units under solvothermal reaction condition.The gas adsorption properties of the obtained micro-porous nitrogen-rich COF were investigated.The results indicated that the activated COF material presented good up take capabilities of CO_(2) and CH_(4) at 61.2 and 43.4 cm^(3)·g^(−1)at 1 atm and 273 K,respectively,showing its applica-tion potential in selective gas capture and separation.
基金This work was supported by the Natural Science Foundation of Tianjin(No.16JCYBJC19700)the National Natural Science Foundation of China(No.21771138).
文摘of main observation and conclusion A highly efficient catalytic system for the N-arylation reactions of(hetero)aryl chlorides and nitrogen heterocycles with a copper(l)complex containing a 1,10-phenanthroline analogue N-heterocyclic carbene(NHC)has been reported.The complex was characterized by^lH NMR and^13C NMR spectroscopy and elemental analysis,and its structure was determined by single-crystal X-ray diffraction.The NHC-copper(l)complex was employed as pre-catalyst for Ullmann type N-arylation reactions of(hetero)aryl chlorides with various azoles.A variety of hindered and functionalized azoles and(hetero)aryl chlorides were transformed in good to excellent yields.
