In this work,we screened three Grubbs catalysts and two Hoveyda-Grubbs catalysts for the production of H_(2) by dehydrogenation of formic acid(FA).The best results were achieved with the use of a first-generation Hove...In this work,we screened three Grubbs catalysts and two Hoveyda-Grubbs catalysts for the production of H_(2) by dehydrogenation of formic acid(FA).The best results were achieved with the use of a first-generation Hoveyda-Grubbs catalyst.With a catalyst loading of mere 0.5μmol, a maximum TON of 36356 was obtained within 3 h.Two key intermediates were identified by using 1H NMR and high-resolution electrospray ionization mass spectroscopy(HRESI-MS),based on which a mechanism possibly responsible for the observed catalysis was proposed.展开更多
Grubbs’ catalyst was used to prepare a series of carbosilane dendrimers with silacyclopentene peripheral groups. It was found that ring closing metathesis reaction was influenced strongly by the reaction temperatur...Grubbs’ catalyst was used to prepare a series of carbosilane dendrimers with silacyclopentene peripheral groups. It was found that ring closing metathesis reaction was influenced strongly by the reaction temperature and the amount of catalyst.展开更多
基金Financial support by start-up fund from SUSTech(Nos.Y01216127 and Y01216227,ZZ)the Distinguished Expert Fund from Nanshan District of Shenzhen(No.K19219502,ZZ)+7 种基金the China Postdoctoral Science Foundation(No.2018M640226,LQ)the SUSTech Presidential Postdoctoral Fellowship(LQ)the Basic and Applied Basic Research Programs of Guangdong Provinee(No.2020A1515110990,LQ)the Post-doctorate Scientific Research Fund for staying(coming to)Shenzhen(K21217515,LQ)the Jilin Provi ncial Science Research Foun dati on of China(No.20200403154SF)Special Funds for the Cultivation of Guang-dong College Stude nts'Scie ntific and Tech no logical Inno vatio n("Climbing Program"Special Funds,pdjh2020c0034)is acknowledgedThis work was also partly sponsored by Guangdong Provincial Key Laboratory of Catalysis(No.2020B121201002)the She nzhe n Nobel Prize Scie ntists Laboratory Project(No.C17783101).
文摘In this work,we screened three Grubbs catalysts and two Hoveyda-Grubbs catalysts for the production of H_(2) by dehydrogenation of formic acid(FA).The best results were achieved with the use of a first-generation Hoveyda-Grubbs catalyst.With a catalyst loading of mere 0.5μmol, a maximum TON of 36356 was obtained within 3 h.Two key intermediates were identified by using 1H NMR and high-resolution electrospray ionization mass spectroscopy(HRESI-MS),based on which a mechanism possibly responsible for the observed catalysis was proposed.
文摘Grubbs’ catalyst was used to prepare a series of carbosilane dendrimers with silacyclopentene peripheral groups. It was found that ring closing metathesis reaction was influenced strongly by the reaction temperature and the amount of catalyst.
