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  1. Article: Recyclable Gold Catalyst for the Stereoselective Thioallylation of Alkynes

    Hu, Wenli / Niu, Bingbo / Xiao, Xiaoqiang / Cai, Mingzhong

    Journal of organic chemistry. 2021 Sept. 22, v. 86, no. 19

    2021  

    Abstract: The heterogeneous gold(I)-catalyzed stereoselective thioallylation of electron-deficient alkynes with allyl sulfides has been achieved by using an MCM-41-immobilized sterically demanding NHC-gold(I) complex [MCM-41-IPrAuNTf₂] as the catalyst under mild ... ...

    Abstract The heterogeneous gold(I)-catalyzed stereoselective thioallylation of electron-deficient alkynes with allyl sulfides has been achieved by using an MCM-41-immobilized sterically demanding NHC-gold(I) complex [MCM-41-IPrAuNTf₂] as the catalyst under mild conditions, delivering a wide variety of stereodefined tri- and tetrasubstituted functionalized vinyl sulfides in good to excellent yields. The new heterogeneous MCM-41-IPrAuNTf₂ catalyst exhibits an activity comparable to a homogeneous IPrAuNTf₂ complex and can be recovered via a simple filtration process and reused for at least seven consecutive cycles without any apparent loss of its catalytic activity and selectivity.
    Keywords alkynes ; catalysts ; catalytic activity ; filtration ; gold ; organic chemistry ; stereoselectivity
    Language English
    Dates of publication 2021-0922
    Size p. 13598-13609.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c01641
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

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  2. Article: Recyclable heterogeneous gold(I)-catalyzed oxidation of internal acylalkynes: Practical access to vicinal tricarbonyls

    Hu, Wenli / Huang, Bin / Niu, Bingbo / Cai, Mingzhong

    Tetrahedron letters. 2021 Mar. 30, v. 68

    2021  

    Abstract: A highly efficient heterogeneous gold(I)-catalyzed oxidation of internal acylalkynes has been developed using 2,6-dichloropyridine N-oxide as the oxidant in dichloromethane (CH₂Cl₂) at room temperature, providing a novel and practical approach for the ... ...

    Abstract A highly efficient heterogeneous gold(I)-catalyzed oxidation of internal acylalkynes has been developed using 2,6-dichloropyridine N-oxide as the oxidant in dichloromethane (CH₂Cl₂) at room temperature, providing a novel and practical approach for the construction of diverse vicinal tricarbonyls such as α,β-diketoesters, 1,2,3-triketones, and α,β-diketoamides in good to excellent yields. The heterogeneous gold(I) catalyst can be readily obtained via a simple preparative procedure from commercially available reagents and recovered by filtration of the reaction mixture and reused up to seven times without significant loss of catalytic efficiency.
    Keywords ambient temperature ; catalysts ; catalytic activity ; filtration ; gold ; methylene chloride ; oxidants ; oxidation
    Language English
    Dates of publication 2021-0330
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2021.152953
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Article ; Online: Recyclable Gold Catalyst for the Stereoselective Thioallylation of Alkynes.

    Hu, Wenli / Niu, Bingbo / Xiao, Xiaoqiang / Cai, Mingzhong

    The Journal of organic chemistry

    2021  Volume 86, Issue 19, Page(s) 13598–13609

    Abstract: The heterogeneous gold(I)-catalyzed stereoselective thioallylation of electron-deficient alkynes with allyl sulfides has been achieved by using an MCM-41-immobilized sterically demanding NHC-gold(I) complex [MCM-41- ... ...

    Abstract The heterogeneous gold(I)-catalyzed stereoselective thioallylation of electron-deficient alkynes with allyl sulfides has been achieved by using an MCM-41-immobilized sterically demanding NHC-gold(I) complex [MCM-41-IPrAuNTf
    MeSH term(s) Alkynes ; Catalysis ; Gold
    Chemical Substances Alkynes ; Gold (7440-57-5)
    Language English
    Publishing date 2021-09-22
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c01641
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Article ; Online: Comparison of σ-/π-Hole Tetrel Bonds between TH

    Dong, Wenbo / Niu, Bingbo / Liu, Shufeng / Cheng, Jianbo / Liu, Shaoli / Li, Qingzhong

    Chemphyschem : a European journal of chemical physics and physical chemistry

    2019  Volume 20, Issue 4, Page(s) 627–635

    Abstract: Several σ-hole and π-hole tetrel-bonded complexes with a base ... ...

    Abstract Several σ-hole and π-hole tetrel-bonded complexes with a base H
    Language English
    Publishing date 2019-02-05
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1439-7641
    ISSN (online) 1439-7641
    DOI 10.1002/cphc.201800990
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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