A series of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles was synthesized expeditiously in good yields from o-phenylenediamines and aldehydes in the presence of Fe（ClO4）3 without solvent at room temperature.
In the absence of organic solvents,the Lewis acid catalyzed cyclocondensation reactions between 1-naphthol and benzils gave 3-aryl-3-aryl'naphtho[1,2-b]furan-2(3H)-ones(NFs) in good yields(62%～70%)An electrophili...In the absence of organic solvents,the Lewis acid catalyzed cyclocondensation reactions between 1-naphthol and benzils gave 3-aryl-3-aryl'naphtho[1,2-b]furan-2(3H)-ones(NFs) in good yields(62%～70%)An electrophilic substitution mechanism involving formation of n-EPD/v- EPA complexes and rearrangement of aryl group was proposed.展开更多
The complex[(CNC)^(Mes)Rh(PMe_(2)Ph)]PF6(1)has been found to be an effective catalyst for solventless formic acid(FA)dehydrogenation,affording exclusively H_(2)and CO_(2)as decomposition products.The effect of the add...The complex[(CNC)^(Mes)Rh(PMe_(2)Ph)]PF6(1)has been found to be an effective catalyst for solventless formic acid(FA)dehydrogenation,affording exclusively H_(2)and CO_(2)as decomposition products.The effect of the addition of a base as a co-catalyst was studied,and it was found that HCOONa was the most efficient additive in terms of catalyst efficiency with a catalyst loading of 0.016 mol%,reaching TOF_(max)values up to 5869 h^(−1).展开更多
NiS Nanoparticles were synthesized from nickel hexadecylxanthate single-source precursor via a thermolytic method. The partial xanthate ligand dissociated from precursor absorbed to the surface of NiS nanoparticles as...NiS Nanoparticles were synthesized from nickel hexadecylxanthate single-source precursor via a thermolytic method. The partial xanthate ligand dissociated from precursor absorbed to the surface of NiS nanoparticles as capping agent. The products were characterized by FTIR,XRD and TEM. The results indicate that NiS nanoparticles have excellent dispersibility with hexagonal structure and the average diameter is 15 nm.展开更多
文摘A series of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles was synthesized expeditiously in good yields from o-phenylenediamines and aldehydes in the presence of Fe（ClO4）3 without solvent at room temperature.
文摘In the absence of organic solvents,the Lewis acid catalyzed cyclocondensation reactions between 1-naphthol and benzils gave 3-aryl-3-aryl'naphtho[1,2-b]furan-2(3H)-ones(NFs) in good yields(62%～70%)An electrophilic substitution mechanism involving formation of n-EPD/v- EPA complexes and rearrangement of aryl group was proposed.
基金PGC2018-099383-B-I00 and RTI2018-099136-A-I00 funded by MCIN/AEI/10.13039/501100011033by“ERDF A way of making Europe”,DGA/FSE(group E42_20R)CSIC project 202080I024 are gratefully acknowledged.The co-author V.P.thankfully acknowledges the resources from the supercomputers“Memento”and the technical expertise and assistance provided by the Institute for Biocomputation and Physics of Complex Systems(BIFI)–Universidad de Zaragoza.A.U.thankfully acknowledges the Spanish MECD for an FPU fellowship(FPU 2017/05417).
文摘The complex[(CNC)^(Mes)Rh(PMe_(2)Ph)]PF6(1)has been found to be an effective catalyst for solventless formic acid(FA)dehydrogenation,affording exclusively H_(2)and CO_(2)as decomposition products.The effect of the addition of a base as a co-catalyst was studied,and it was found that HCOONa was the most efficient additive in terms of catalyst efficiency with a catalyst loading of 0.016 mol%,reaching TOF_(max)values up to 5869 h^(−1).
文摘NiS Nanoparticles were synthesized from nickel hexadecylxanthate single-source precursor via a thermolytic method. The partial xanthate ligand dissociated from precursor absorbed to the surface of NiS nanoparticles as capping agent. The products were characterized by FTIR,XRD and TEM. The results indicate that NiS nanoparticles have excellent dispersibility with hexagonal structure and the average diameter is 15 nm.
