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
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.
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.
