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Arsonium

The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform

Hui Zhang – 1st expert on this subject based on the ideXlab platform

  • stereoselective synthesis of sulfonyl substituted trans 2 3 dihydrofuran derivatives via reaction of Arsonium ylides with α β unsaturated ketones
    Chemical Research in Chinese Universities, 2014
    Co-Authors: Xiaohong Zhou, Jie Chen, Hui Zhang, Hongmei Deng, Min Shao, Mark C Mcmills

    Abstract:

    Trans-2,3-dihydrofuran derivatives 3 or 4 substituted with a sulfonyl group were prepared with high chemoselectivity and good yields by [1+4]-addition reaction of α,β-unsaturated ketones 1 with Arsonium bromide 2 in CH2Cl2 in the presence of potassium carbonate at room temperature. The structures of the products were characterized by IR, MS, 1H NMR, elemental analysis and single crystal X-ray diffraction analysis. A mechanism for the formation of products was also proposed.

  • an efficient and highly stereoselective synthesis of novel trifluoromethylated trans dihydrofuro 2 3 c pyrazoles using Arsonium ylides
    Tetrahedron, 2012
    Co-Authors: Jiaping Zhang, Jie Chen, Hongmei Deng, Min Shao, Shuxin Yang, Kai Zhang, Hui Zhang

    Abstract:

    Abstract An efficient approach of highly stereoselective synthesis of novel trifluoromethylated trans-4,5-dihydrofuro[2,3-c]pyrazoles has been described. Arsonium bromides 1 reacted smoothly with the electron-deficient alkenes (Z)-4-aryl-1-phenyl-3-(trifluoromethyl)-1H-pyrozol-5(4H)-ones 2 to give products trans-dihydrofuro[2,3-c]pyrazoles 3 with high stereoselectivity and in good to excellent yields, using CH2Cl2 as solvent and K2CO3 as base.

  • A Convenient Synthesis of Fluorine‐Containing trans‐1,2‐Cyclopropane Derivatives from Semistabilized Arsonium Ylides
    Chinese Journal of Chemistry, 2011
    Co-Authors: Kaicheng Wu, Yali Chen, Hui Zhang, Xuyan Ma, Jie Chen

    Abstract:

    The fluorine-containing trans-1,2-cyclopropane derivatives 4ba–4dd were synthesized from the fluorine-containing electron-deficient alkenes 3a–3d with semistabilized Arsonium ylides 2b–2d, in biphasic system of dichloromethane-50% aqueous sodium hydroxide, generated in situ from the corresponding Arsonium salts 1b–1d at room temperature in good yields with high stereoselectivity. The structure of fluorine-containing trans-1,2-cyclopropane derivatives were also studied.

Min Shao – 2nd expert on this subject based on the ideXlab platform

  • stereoselective synthesis of sulfonyl substituted trans 2 3 dihydrofuran derivatives via reaction of Arsonium ylides with α β unsaturated ketones
    Chemical Research in Chinese Universities, 2014
    Co-Authors: Xiaohong Zhou, Jie Chen, Hui Zhang, Hongmei Deng, Min Shao, Mark C Mcmills

    Abstract:

    Trans-2,3-dihydrofuran derivatives 3 or 4 substituted with a sulfonyl group were prepared with high chemoselectivity and good yields by [1+4]-addition reaction of α,β-unsaturated ketones 1 with Arsonium bromide 2 in CH2Cl2 in the presence of potassium carbonate at room temperature. The structures of the products were characterized by IR, MS, 1H NMR, elemental analysis and single crystal X-ray diffraction analysis. A mechanism for the formation of products was also proposed.

  • an efficient and highly stereoselective synthesis of novel trifluoromethylated trans dihydrofuro 2 3 c pyrazoles using Arsonium ylides
    Tetrahedron, 2012
    Co-Authors: Jiaping Zhang, Jie Chen, Hongmei Deng, Min Shao, Shuxin Yang, Kai Zhang, Hui Zhang

    Abstract:

    Abstract An efficient approach of highly stereoselective synthesis of novel trifluoromethylated trans-4,5-dihydrofuro[2,3-c]pyrazoles has been described. Arsonium bromides 1 reacted smoothly with the electron-deficient alkenes (Z)-4-aryl-1-phenyl-3-(trifluoromethyl)-1H-pyrozol-5(4H)-ones 2 to give products trans-dihydrofuro[2,3-c]pyrazoles 3 with high stereoselectivity and in good to excellent yields, using CH2Cl2 as solvent and K2CO3 as base.

  • highly stereoselective synthesis of trans 4 trifluoromethylsulfonyl 2 3 dihydrofurans from Arsonium ylides and e α trifluoromethylsulfonyl α β unsaturated ketones
    ChemInform, 2011
    Co-Authors: Zhenqi Chen, Jie Chen, Hongmei Deng, Min Shao, Jiaping Zhang, Hui Zhang

    Abstract:

    The reaction tolerates a wide range of functional groups at the Arsonium ylides and a variety of aromatic and furanyl substituents at the α,β-unsaturated ketones and proceeds with complete stereoselectivity.

Jie Chen – 3rd expert on this subject based on the ideXlab platform

  • stereoselective synthesis of sulfonyl substituted trans 2 3 dihydrofuran derivatives via reaction of Arsonium ylides with α β unsaturated ketones
    Chemical Research in Chinese Universities, 2014
    Co-Authors: Xiaohong Zhou, Jie Chen, Hui Zhang, Hongmei Deng, Min Shao, Mark C Mcmills

    Abstract:

    Trans-2,3-dihydrofuran derivatives 3 or 4 substituted with a sulfonyl group were prepared with high chemoselectivity and good yields by [1+4]-addition reaction of α,β-unsaturated ketones 1 with Arsonium bromide 2 in CH2Cl2 in the presence of potassium carbonate at room temperature. The structures of the products were characterized by IR, MS, 1H NMR, elemental analysis and single crystal X-ray diffraction analysis. A mechanism for the formation of products was also proposed.

  • an efficient and highly stereoselective synthesis of novel trifluoromethylated trans dihydrofuro 2 3 c pyrazoles using Arsonium ylides
    Tetrahedron, 2012
    Co-Authors: Jiaping Zhang, Jie Chen, Hongmei Deng, Min Shao, Shuxin Yang, Kai Zhang, Hui Zhang

    Abstract:

    Abstract An efficient approach of highly stereoselective synthesis of novel trifluoromethylated trans-4,5-dihydrofuro[2,3-c]pyrazoles has been described. Arsonium bromides 1 reacted smoothly with the electron-deficient alkenes (Z)-4-aryl-1-phenyl-3-(trifluoromethyl)-1H-pyrozol-5(4H)-ones 2 to give products trans-dihydrofuro[2,3-c]pyrazoles 3 with high stereoselectivity and in good to excellent yields, using CH2Cl2 as solvent and K2CO3 as base.

  • A Convenient Synthesis of Fluorine‐Containing trans‐1,2‐Cyclopropane Derivatives from Semistabilized Arsonium Ylides
    Chinese Journal of Chemistry, 2011
    Co-Authors: Kaicheng Wu, Yali Chen, Hui Zhang, Xuyan Ma, Jie Chen

    Abstract:

    The fluorine-containing trans-1,2-cyclopropane derivatives 4ba–4dd were synthesized from the fluorine-containing electron-deficient alkenes 3a–3d with semistabilized Arsonium ylides 2b–2d, in biphasic system of dichloromethane-50% aqueous sodium hydroxide, generated in situ from the corresponding Arsonium salts 1b–1d at room temperature in good yields with high stereoselectivity. The structure of fluorine-containing trans-1,2-cyclopropane derivatives were also studied.