A novel β-cyclodextrin(β-CD)derivative bearing diethanolamine moiety was synthesized by a convenient method with 63% yield,and the new host compound was characterized by (13)~C-NMR,FT-IR spectra etc,
Additions of diethyl phosphite to α-nitroalkenes followed by the introduction of trimethylchlorosilane and an activated alkene, gave the corresponding title compounds via regioselective 1,3-dipolar cycloaddition in m...Additions of diethyl phosphite to α-nitroalkenes followed by the introduction of trimethylchlorosilane and an activated alkene, gave the corresponding title compounds via regioselective 1,3-dipolar cycloaddition in moderate yield.展开更多
In order to find new herbicidal compounds, twelve novel 1-phenoxyacetyl-3-arylimidazolidine-2,4-dione compounds were designed and synthesized by substructure combination strategy using 3-arylimidazolidine-2,4-dione as...In order to find new herbicidal compounds, twelve novel 1-phenoxyacetyl-3-arylimidazolidine-2,4-dione compounds were designed and synthesized by substructure combination strategy using 3-arylimidazolidine-2,4-dione as the intermediate. The structures of the target compounds were confirmed by;H NMR and IR. The preliminary bioassay results showed that most of the target compounds had good inhibition against rape and barnyardgrass at the concentration of 100 mg/L. Especially, compound H3 and H5 showed 100% inhibitory activity against rape.展开更多
[Objective]The paper was to develop a novel fungicide with high efficacy and low toxicity.[Method]Chlorothalonil was used as the parent structure,and its 4-position substituent was converted to amino group.Totally 12 ...[Objective]The paper was to develop a novel fungicide with high efficacy and low toxicity.[Method]Chlorothalonil was used as the parent structure,and its 4-position substituent was converted to amino group.Totally 12 amide compounds not reported in the literature were designed and synthesized.Their structures were conformed by 1H NMR.[Result]The preliminary bioassay test showed that compounds JTCN-01,JTCN-05 and JTCN-07 had good control effect on corn rust at the concentration of 200 mg/L,and the control effect of compound JTCN-05 reached 95%.[Conclusion]Some chlorothalonil derivatives had the potential for further development.展开更多
The chemistry of inclusion compounds has a long history and is nowadays a subject of wide-ranging and intense study. With the awarding of the 1987 Nobel Prize in Chemistry to Donald J. Cram, Jean-Marie Lehn and Charle...The chemistry of inclusion compounds has a long history and is nowadays a subject of wide-ranging and intense study. With the awarding of the 1987 Nobel Prize in Chemistry to Donald J. Cram, Jean-Marie Lehn and Charles J. Pedersen for their fundamental work on 'host-guest' or 'supramolecular' systems, inclusion chemistry has come to the fore front in contemporary researches. Increasing varieties of novel inclusion compounds and new host molecules have been synthesized recently. The term 'crystal engineering' was coined by Schmidt to describe the rational design and control of molecular packing arrangements in the solid state, and the structural study of clathrates has contributed展开更多
文摘A novel β-cyclodextrin(β-CD)derivative bearing diethanolamine moiety was synthesized by a convenient method with 63% yield,and the new host compound was characterized by (13)~C-NMR,FT-IR spectra etc,
文摘Additions of diethyl phosphite to α-nitroalkenes followed by the introduction of trimethylchlorosilane and an activated alkene, gave the corresponding title compounds via regioselective 1,3-dipolar cycloaddition in moderate yield.
基金Supported by Key Research and Development Plan of Shandong Province(2018GGX107012)Agricultural Science and Technology Innovation Project of Shandong Academy of Agricultural Sciences(CXGC2018E19)
文摘In order to find new herbicidal compounds, twelve novel 1-phenoxyacetyl-3-arylimidazolidine-2,4-dione compounds were designed and synthesized by substructure combination strategy using 3-arylimidazolidine-2,4-dione as the intermediate. The structures of the target compounds were confirmed by;H NMR and IR. The preliminary bioassay results showed that most of the target compounds had good inhibition against rape and barnyardgrass at the concentration of 100 mg/L. Especially, compound H3 and H5 showed 100% inhibitory activity against rape.
基金Supported by Agricultural Science and Technology Innovation Project of Shandong Academy of Agricultural Sciences(CXGC2018E19).
文摘[Objective]The paper was to develop a novel fungicide with high efficacy and low toxicity.[Method]Chlorothalonil was used as the parent structure,and its 4-position substituent was converted to amino group.Totally 12 amide compounds not reported in the literature were designed and synthesized.Their structures were conformed by 1H NMR.[Result]The preliminary bioassay test showed that compounds JTCN-01,JTCN-05 and JTCN-07 had good control effect on corn rust at the concentration of 200 mg/L,and the control effect of compound JTCN-05 reached 95%.[Conclusion]Some chlorothalonil derivatives had the potential for further development.
基金This work was supported by the National Natural Science Foundation of China (Grant No. 29973005) and we are grateful to Hong Kong Research Grants Council Earmarked Grant (CUHK 456/95P) for supporting this research work.
文摘The chemistry of inclusion compounds has a long history and is nowadays a subject of wide-ranging and intense study. With the awarding of the 1987 Nobel Prize in Chemistry to Donald J. Cram, Jean-Marie Lehn and Charles J. Pedersen for their fundamental work on 'host-guest' or 'supramolecular' systems, inclusion chemistry has come to the fore front in contemporary researches. Increasing varieties of novel inclusion compounds and new host molecules have been synthesized recently. The term 'crystal engineering' was coined by Schmidt to describe the rational design and control of molecular packing arrangements in the solid state, and the structural study of clathrates has contributed
