在已报道的方法上,使用六甲基二硅烷胺和氢化钠在无溶剂条件下合成了六甲基二硅烷胺钠,改进了反应的温度、时间、物料配比,最佳收率能够达到99.2%。目标化合物的结构经核磁氢谱(H nuclear magnetic resonance spectrum,1H NMR)、红外光...在已报道的方法上,使用六甲基二硅烷胺和氢化钠在无溶剂条件下合成了六甲基二硅烷胺钠,改进了反应的温度、时间、物料配比,最佳收率能够达到99.2%。目标化合物的结构经核磁氢谱(H nuclear magnetic resonance spectrum,1H NMR)、红外光谱(infra-red spectrum,IR)和高分辨质谱(high resolution mass spectrometer,HRMS)确证。后续阶段新加入洗涤步骤,减少后处理时间,提高了产品摩尔浓度。改进后的工艺操作简便,成本较低,最终产品为清澈透明的淡黄色溶液,且产品摩尔浓度与性状符合市场产品质量的标准。展开更多
National Pesticide Engineering Research Center,Nankai University,Tianjin3000 71)abstract:Chiral recognition is an attractive subject in the area of host-vip chemis try.Conformation study is per-formed to understand ...National Pesticide Engineering Research Center,Nankai University,Tianjin3000 71)abstract:Chiral recognition is an attractive subject in the area of host-vip chemis try.Conformation study is per-formed to understand chiral recognition of zinc porphyrin with imidazole derivatives on a molecular level.The molecular reco gnition of three novel chiral zinc porphyrin(1-3)abstract:with four types of imidazole d erivatives was stud-ied.The conformation searching of this host-vip system w as studied by using simulated annealing method on the basis of Tripos force fiel d.The different minimal energy conformation of imidazole combind with porphyrin was studied.The quantum chemistry calculation was performed to calculate the sin gle-point energies of the host-vip system.The minimal energy conformation of ZnT(o-BocAla)abstract:APP(3)abstract:-Im showed that Im attaching from the single-side chain o f the host had the reasonable configuration than that from the three-side chain .The former also had the lower energy than the latter.And the quantum chemistry calculation results of orbital energy,Δ E L-H ,and atomic net charge revealed the same way.The results illumate that combi nation oriention of the host-vip system is the single chain of the hosts.展开更多
文摘在已报道的方法上,使用六甲基二硅烷胺和氢化钠在无溶剂条件下合成了六甲基二硅烷胺钠,改进了反应的温度、时间、物料配比,最佳收率能够达到99.2%。目标化合物的结构经核磁氢谱(H nuclear magnetic resonance spectrum,1H NMR)、红外光谱(infra-red spectrum,IR)和高分辨质谱(high resolution mass spectrometer,HRMS)确证。后续阶段新加入洗涤步骤,减少后处理时间,提高了产品摩尔浓度。改进后的工艺操作简便,成本较低,最终产品为清澈透明的淡黄色溶液,且产品摩尔浓度与性状符合市场产品质量的标准。
文摘National Pesticide Engineering Research Center,Nankai University,Tianjin3000 71)abstract:Chiral recognition is an attractive subject in the area of host-vip chemis try.Conformation study is per-formed to understand chiral recognition of zinc porphyrin with imidazole derivatives on a molecular level.The molecular reco gnition of three novel chiral zinc porphyrin(1-3)abstract:with four types of imidazole d erivatives was stud-ied.The conformation searching of this host-vip system w as studied by using simulated annealing method on the basis of Tripos force fiel d.The different minimal energy conformation of imidazole combind with porphyrin was studied.The quantum chemistry calculation was performed to calculate the sin gle-point energies of the host-vip system.The minimal energy conformation of ZnT(o-BocAla)abstract:APP(3)abstract:-Im showed that Im attaching from the single-side chain o f the host had the reasonable configuration than that from the three-side chain .The former also had the lower energy than the latter.And the quantum chemistry calculation results of orbital energy,Δ E L-H ,and atomic net charge revealed the same way.The results illumate that combi nation oriention of the host-vip system is the single chain of the hosts.
