The complex [Cd(tren)(meim)](ClO4)2 was synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The compound crystallizes in monoclinic system, space group P21/m with a=0.786 8(2)...The complex [Cd(tren)(meim)](ClO4)2 was synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The compound crystallizes in monoclinic system, space group P21/m with a=0.786 8(2) nm, b=0.834 2(2) nm, c=1.496 2(4) nm, Mr=538.64, Z=2, F(000)=542, Dc=1.822 g·cm-3, T=298(2) K, μ=1.435 mm-1 and λ=0.071 073 nm. The structure was refined to R=0.045 8 and wR=0.123 1 for 1 489 observed reflections with I>2σ(I). The complex was valued for its antimicrobial activity against bacterial strands using the agar diffusion method. It was found to be active against the four test bacterial organisms. CCDC: 600198.展开更多
Extraction of p -aminophenol by D2EHPA, Alamine336 and their mixture were studied under various initial pH ranging 3-10.Both extractants extracted neutral form of p -aminophenol. When the pH value was between p K a1 a...Extraction of p -aminophenol by D2EHPA, Alamine336 and their mixture were studied under various initial pH ranging 3-10.Both extractants extracted neutral form of p -aminophenol. When the pH value was between p K a1 and p K a2 ,a maximum distribution ratio appeared. This pH dependence can be explained by varying the molar fraction of neutral PAP with pH value. The mixed solvent of D2EHPA and Alamine336 had a higher distribution ratio than either Alamine336 or D2EHPA alone, i.e. ,the extraction of p -aminophenol with the mixed solvent showed the synergistic effect,and the molar concentration ratio of D2EHPA to Alamine336 at 1∶1.5 was the synergistic point.展开更多
在低温和碱性条件下,将甘氨酸与碳酸二叔丁酯反应制得N-(叔丁氧羰基)甘氨酸化合物(1).再将化合物1在N,N’-二环己基碳化二亚胺和4-二甲氨基吡啶的作用下与三氟乙胺盐酸盐进行酰胺化制得N-[2-氧代-2-[(2,2,2-三氟乙基)氨基]乙基]氨基甲酸...在低温和碱性条件下,将甘氨酸与碳酸二叔丁酯反应制得N-(叔丁氧羰基)甘氨酸化合物(1).再将化合物1在N,N’-二环己基碳化二亚胺和4-二甲氨基吡啶的作用下与三氟乙胺盐酸盐进行酰胺化制得N-[2-氧代-2-[(2,2,2-三氟乙基)氨基]乙基]氨基甲酸-1,1-二甲基乙酯(2).然后将化合物2在盐酸作用下脱除保护基Boc,得到2-氨基-N-(2,2,2-三氟乙基)乙酰胺.最后通入氯化氢气体制成2-氨基-N-(2,2,2-三氟乙基)乙酰胺盐酸盐(3).化合物1~3经MS、IR、1 H NMR和13 C NMR等确证结构.文中所采用的方法具有原料易得、操作简便、安全性高等优点.展开更多
文摘The complex [Cd(tren)(meim)](ClO4)2 was synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The compound crystallizes in monoclinic system, space group P21/m with a=0.786 8(2) nm, b=0.834 2(2) nm, c=1.496 2(4) nm, Mr=538.64, Z=2, F(000)=542, Dc=1.822 g·cm-3, T=298(2) K, μ=1.435 mm-1 and λ=0.071 073 nm. The structure was refined to R=0.045 8 and wR=0.123 1 for 1 489 observed reflections with I>2σ(I). The complex was valued for its antimicrobial activity against bacterial strands using the agar diffusion method. It was found to be active against the four test bacterial organisms. CCDC: 600198.
文摘Extraction of p -aminophenol by D2EHPA, Alamine336 and their mixture were studied under various initial pH ranging 3-10.Both extractants extracted neutral form of p -aminophenol. When the pH value was between p K a1 and p K a2 ,a maximum distribution ratio appeared. This pH dependence can be explained by varying the molar fraction of neutral PAP with pH value. The mixed solvent of D2EHPA and Alamine336 had a higher distribution ratio than either Alamine336 or D2EHPA alone, i.e. ,the extraction of p -aminophenol with the mixed solvent showed the synergistic effect,and the molar concentration ratio of D2EHPA to Alamine336 at 1∶1.5 was the synergistic point.
文摘在低温和碱性条件下,将甘氨酸与碳酸二叔丁酯反应制得N-(叔丁氧羰基)甘氨酸化合物(1).再将化合物1在N,N’-二环己基碳化二亚胺和4-二甲氨基吡啶的作用下与三氟乙胺盐酸盐进行酰胺化制得N-[2-氧代-2-[(2,2,2-三氟乙基)氨基]乙基]氨基甲酸-1,1-二甲基乙酯(2).然后将化合物2在盐酸作用下脱除保护基Boc,得到2-氨基-N-(2,2,2-三氟乙基)乙酰胺.最后通入氯化氢气体制成2-氨基-N-(2,2,2-三氟乙基)乙酰胺盐酸盐(3).化合物1~3经MS、IR、1 H NMR和13 C NMR等确证结构.文中所采用的方法具有原料易得、操作简便、安全性高等优点.
