In this paper, 3 (2 chloro 5 pyridylmethyl)amino 2 cyano 3 methylthio ethyl acrylates 3 were synthesized. By the reaction of 3 as an intermediate with amines, 5 new 3 (substituted)amino 3 (2 chloro 5 pyridylmethyl)ami...In this paper, 3 (2 chloro 5 pyridylmethyl)amino 2 cyano 3 methylthio ethyl acrylates 3 were synthesized. By the reaction of 3 as an intermediate with amines, 5 new 3 (substituted)amino 3 (2 chloro 5 pyridylmethyl)amino 2 cyano ethyl acrylates were prepared. When 3 reacted with hydrazine, the corresponding cyclic compound 4f was obtained. The preliminary bioassays showed that compounds 3 has good herbicidal activity.展开更多
The atom transfer radical polymerization of styrene was carried out with an α-haloketone, 2-bromocyclohexanone, as the initiator in the presence of CuBr/Cu/2,2′-bipyridine or CuBr/ N,N,N′,N″,N″-pentamethyldiethyl...The atom transfer radical polymerization of styrene was carried out with an α-haloketone, 2-bromocyclohexanone, as the initiator in the presence of CuBr/Cu/2,2′-bipyridine or CuBr/ N,N,N′,N″,N″-pentamethyldiethylenetriamine catalytic system. The polymerization proceeded in a living fashion with that the number average molecular weight increased linearly with the increase of monomer conversion and the polydispersity was relatively low through the polymerization process, especially with CuBr/N,N,N′,N″,N″-pentamethyldiethylenetriamine as the catalyst. The initiation efficiency of 2-bromocyclohexanone in both catalysis systems was about 80%. 1H NMR and 13C NMR verified the presence of 2-oxocyclohexyl and bromine atom at the both ends of polystyrene chains respectively, which were derived from the 2-bromocyclohexanone.展开更多
A novel ligand N - ethyl - 1,10 - phenanthroline - 2 - methanamine and its Ni(Ⅱ)complex have been synthesized.The crystal structure of the complex has been determined by X - ray diffraction method.The Ni(Ⅱ)is five -...A novel ligand N - ethyl - 1,10 - phenanthroline - 2 - methanamine and its Ni(Ⅱ)complex have been synthesized.The crystal structure of the complex has been determined by X - ray diffraction method.The Ni(Ⅱ)is five - coordi - nated by three nitrogen atoms from the ligand and two Cl - anions in a distorted trigonal bipyramidal environment:the N(2),Cl(1)and Cl(2)in equatorial plane;the N(1)and N(3)in axial positions.The UV - spectra and IR - spectra of the ligand and its Ni(Ⅱ)complex were recorded and discussed.The thermodynamic properties of the ligand with various bivalent metals were studied by potentiometric titrations and the order of the stability constants is in a - greement with the Irving - Williams order in coordination chemistry.CCDC:221750.展开更多
文摘In this paper, 3 (2 chloro 5 pyridylmethyl)amino 2 cyano 3 methylthio ethyl acrylates 3 were synthesized. By the reaction of 3 as an intermediate with amines, 5 new 3 (substituted)amino 3 (2 chloro 5 pyridylmethyl)amino 2 cyano ethyl acrylates were prepared. When 3 reacted with hydrazine, the corresponding cyclic compound 4f was obtained. The preliminary bioassays showed that compounds 3 has good herbicidal activity.
文摘The atom transfer radical polymerization of styrene was carried out with an α-haloketone, 2-bromocyclohexanone, as the initiator in the presence of CuBr/Cu/2,2′-bipyridine or CuBr/ N,N,N′,N″,N″-pentamethyldiethylenetriamine catalytic system. The polymerization proceeded in a living fashion with that the number average molecular weight increased linearly with the increase of monomer conversion and the polydispersity was relatively low through the polymerization process, especially with CuBr/N,N,N′,N″,N″-pentamethyldiethylenetriamine as the catalyst. The initiation efficiency of 2-bromocyclohexanone in both catalysis systems was about 80%. 1H NMR and 13C NMR verified the presence of 2-oxocyclohexyl and bromine atom at the both ends of polystyrene chains respectively, which were derived from the 2-bromocyclohexanone.
文摘A novel ligand N - ethyl - 1,10 - phenanthroline - 2 - methanamine and its Ni(Ⅱ)complex have been synthesized.The crystal structure of the complex has been determined by X - ray diffraction method.The Ni(Ⅱ)is five - coordi - nated by three nitrogen atoms from the ligand and two Cl - anions in a distorted trigonal bipyramidal environment:the N(2),Cl(1)and Cl(2)in equatorial plane;the N(1)and N(3)in axial positions.The UV - spectra and IR - spectra of the ligand and its Ni(Ⅱ)complex were recorded and discussed.The thermodynamic properties of the ligand with various bivalent metals were studied by potentiometric titrations and the order of the stability constants is in a - greement with the Irving - Williams order in coordination chemistry.CCDC:221750.
