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  1. Article: [No title information]

    Xia, Min / Wang, Yan-guang

    Synthesis

    3013  Volume 2003, Issue 02

    Abstract: Methyl 3,4-dihydropyrimidin-2(1H)-one-5-carboxylate derivatives 7 were effectively synthesized on the soluble polymer of polyethylene glycol (PEG) 4000 by heating or solvent-free microwave irradiation through the Biginelli three-component ... ...

    Abstract Methyl 3,4-dihydropyrimidin-2(1H)-one-5-carboxylate derivatives 7 were effectively synthesized on the soluble polymer of polyethylene glycol (PEG) 4000 by heating or solvent-free microwave irradiation through the Biginelli three-component cyclocondensation. Compared with the classical solution-phase Biginelli reactions, the yields could be considerably improved and the reaction time could be shortened dramatically under microwave promotion in a liquid-phase protocol. Moreover, the polymer-supported synthesis provided the target compounds in high purity.
    Keywords Biginelli reaction ; condensation ; polymers ; cyclizations ; heterocycles ; polyethylene glycol ; microwave irradiation
    Language English
    Publishing date 30131
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2033062-5
    ISSN 1437-210X ; 0039-7881
    ISSN (online) 1437-210X
    ISSN 0039-7881
    DOI 10.1055/s-2003-36816
    Database Thieme publisher's database

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  2. Article ; Online: Rh(III)-Catalyzed Reaction of 4-Diazoisochroman-3-imines with (2-Formylaryl)boronic Acids To Access a Straightforward Construction of 5

    Wang, Yingxiao / Qi, Minghui / Lu, Ping / Wang, Yanguang

    The Journal of organic chemistry

    2023  Volume 88, Issue 19, Page(s) 13544–13552

    Abstract: An Rh(III)-catalyzed one-pot synthesis of ... ...

    Abstract An Rh(III)-catalyzed one-pot synthesis of 5
    Language English
    Publishing date 2023-09-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.3c01185
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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  3. Article ; Online: Rh(III)-catalyzed cascade annulation of 4-diazoisoquinolin-3-ones with benzoic acids to access spiro[isobenzofuran-1,4′-isoquinoline]-3,3′-diones

    Chen, Junrong / Suleman, Muhammad / Lu, Ping / Wang, Yanguang

    Tetrahedron. 2023 May, v. 137 p.133392-

    2023  

    Abstract: A Rh(III)-catalyzed [4 + 1] annulation of aromatic carboxylic acids with 4-diazoisoquinolin-3-ones is reported. A library of highly substituted spiro [isobenzofuran-1,4′-isoquinoline]-3,3′-diones were synthesized in moderate to good yields by this ... ...

    Abstract A Rh(III)-catalyzed [4 + 1] annulation of aromatic carboxylic acids with 4-diazoisoquinolin-3-ones is reported. A library of highly substituted spiro [isobenzofuran-1,4′-isoquinoline]-3,3′-diones were synthesized in moderate to good yields by this protocol (30 examples, up to 84% yield). Broad substrate scope, readily available starting materials, and mild reaction conditions are the merits of this protocol. Moreover, the reaction can be scaled up.
    Keywords benzoic acid ; carboxylic acids ; libraries ; Diazo compounds ; Metal carbenes ; Rhodium catalysis ; Heterocycles
    Language English
    Dates of publication 2023-05
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 204285-x
    ISSN 1464-5416 ; 0040-4020 ; 0563-2064
    ISSN (online) 1464-5416
    ISSN 0040-4020 ; 0563-2064
    DOI 10.1016/j.tet.2023.133392
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Rh(II)-catalyzed synthesis of 5<i>H</i>-isochromeno[3,4-<i>b</i>]indolizines from 4-diazoisochroman-3-imines and pyridines.

    Wang, Yingxiao / Xie, Jianwei / Lu, Ping / Wang, Yanguang

    Organic & biomolecular chemistry

    2022  Volume 20, Issue 43, Page(s) 8484–8488

    Abstract: A Rh(II)-catalyzed (3 + 2) annulation of pyridines with 4-diazoisochroman-3-imines leading to 5 ... H ... -isochromeno[3,4- ... b ... ]indolizines is presented. This methodology provides straightforward access to a wide variety of substituted 5 ... H ... - ... ...

    Abstract A Rh(II)-catalyzed (3 + 2) annulation of pyridines with 4-diazoisochroman-3-imines leading to 5H-isochromeno[3,4-b]indolizines is presented. This methodology provides straightforward access to a wide variety of substituted 5H-isochromeno[3,4-b]indolizines with moderate to good yields (up to 84%) and complete regioselectivity.
    MeSH term(s) Indolizines ; Pyridines ; Imines ; Catalysis ; Cyclization
    Chemical Substances Indolizines ; Pyridines ; Imines
    Language English
    Publishing date 2022-11-09
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d2ob01400a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Olefination of 3-Diazoindolin-2-imines with Hydrazones: An Approach toward Stereoselective Synthesis of (

    Xie, Jianwei / Wu, Li / Lu, Ping / Wang, Yanguang

    The Journal of organic chemistry

    2022  Volume 87, Issue 16, Page(s) 10664–10672

    Abstract: Stereoselective synthesis of ( ...

    Abstract Stereoselective synthesis of (
    MeSH term(s) Catalysis ; Copper ; Hydrazones ; Imines ; Molecular Structure
    Chemical Substances Hydrazones ; Imines ; Copper (789U1901C5)
    Language English
    Publishing date 2022-08-02
    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.2c00864
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Olefination of 3-Diazoindolin-2-imines with Hydrazones: An Approach toward Stereoselective Synthesis of (E)-3-Arylideneindolin-2-imines

    Xie, Jianwei / Wu, Li / Lu, Ping / Wang, Yanguang

    Journal of organic chemistry. 2022 Aug. 02, v. 87, no. 16

    2022  

    Abstract: Stereoselective synthesis of (E)-3-arylideneindolin-2-imines from 3-diazoindolin-2-imines and hydrazones was achieved using copper bromide as the catalyst. The olefination reaction proceeded via copper-catalyzed aerobic oxidation of hydrazones to diazo ... ...

    Abstract Stereoselective synthesis of (E)-3-arylideneindolin-2-imines from 3-diazoindolin-2-imines and hydrazones was achieved using copper bromide as the catalyst. The olefination reaction proceeded via copper-catalyzed aerobic oxidation of hydrazones to diazo compounds and copper-catalyzed cross coupling of two different diazo components in a tandem manner.
    Keywords catalysts ; diazo compounds ; hydrazones ; organic chemistry ; oxidation ; stereoselective synthesis
    Language English
    Dates of publication 2022-0802
    Size p. 10664-10672.
    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.2c00864
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    Z 4' 49/42: Show issues
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  7. Article ; Online: Sc(OTf)3-promoted formal insertion of 4-diazo-1,4-dihydroisoquinolin-3-ones into C–H bond of 1,3-dicarbonyl compounds: Synthesis of 2-(3-oxo-1,2,3,4-tetrahydroisoquinolin-4-yl)-1,3-diarylpropane-1,3-diones

    Xie, Jianwei / Suleman, Muhammad / Qian, Guxin / Lu, Ping / Wang, Yanguang

    Tetrahedron. 2023 Aug., v. 143 p.133558-

    2023  

    Abstract: A facile and efficient synthesis of novel 2-(1,2,3,4-tetrahydroisoquinolin-4-yl)-1,3-diarylpropane-1,3-diones via the Sc(OTf)₃-promoted reaction between 4-diazo-1,4-dihydroisoquinolin-3-ones and 1,3-dicarbonyl compounds is reported. This formal C–H bond ... ...

    Abstract A facile and efficient synthesis of novel 2-(1,2,3,4-tetrahydroisoquinolin-4-yl)-1,3-diarylpropane-1,3-diones via the Sc(OTf)₃-promoted reaction between 4-diazo-1,4-dihydroisoquinolin-3-ones and 1,3-dicarbonyl compounds is reported. This formal C–H bond insertion involves an activation of 1,3-dicarbonyl compounds with generation of triflic acid by-product, a formation of diazonium intermediate from diazo component by triflic acid promotion, and a subsequent intermolecular nucleophilic substitution step. Readily available starting materials, cheap catalyst, broad substrate scope (22 examples, up to 92% yield), and mild reaction conditions are the merits of this reaction.
    Keywords Lewis bases ; byproducts ; catalysts ; diazo compounds ; diazonium compounds ; Lewis acid catalysis ; Heterocycles
    Language English
    Dates of publication 2023-08
    Publishing place Elsevier Ltd
    Document type Article ; Online
    Note Pre-press version
    ZDB-ID 204285-x
    ISSN 1464-5416 ; 0040-4020 ; 0563-2064
    ISSN (online) 1464-5416
    ISSN 0040-4020 ; 0563-2064
    DOI 10.1016/j.tet.2023.133558
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  8. Article ; Online: Rh(III)-Catalyzed C-H bond activation/annulation reactions of arylacyl ammonium salts with 4-diazoisochroman-3-imines and 4-diazoisoquinolin-3-ones.

    Suleman, Muhammad / Qi, Minghui / Xie, Jianwei / Lu, Ping / Wang, Yanguang

    Organic & biomolecular chemistry

    2022  Volume 20, Issue 9, Page(s) 1900–1906

    Abstract: Herein, we report a C-H bond functionalization strategy for the construction of oxo- and aza-spirocyclic compounds from diazo compounds as coupling partners. Our method ... ...

    Abstract Herein, we report a C-H bond functionalization strategy for the construction of oxo- and aza-spirocyclic compounds from diazo compounds as coupling partners. Our method comprises
    Language English
    Publishing date 2022-03-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d1ob02405a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Synthesis of Functionalized Indolobenzazepinones via Sc(OTf)

    Xie, Jianwei / Suleman, Muhammad / Zhang, Ke / Lu, Ping / Wang, Yanguang

    The Journal of organic chemistry

    2022  Volume 87, Issue 23, Page(s) 15938–15946

    Abstract: Herein, we report an unexpected cascade ring expansion/annulation reaction between 4-diazo-1,4-dihydroisoquinolin-3-ones and a variety of isatin derivatives in the presence of Sc(OTf) ...

    Abstract Herein, we report an unexpected cascade ring expansion/annulation reaction between 4-diazo-1,4-dihydroisoquinolin-3-ones and a variety of isatin derivatives in the presence of Sc(OTf)
    Language English
    Publishing date 2022-11-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.2c02076
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  10. Article ; Online: Cu(II)-Catalyzed Synthesis of 4-(1,4,5,6-Tetrahydropyridin-3-yl)-1,4-dihydroisoquinolin-3-ones from 4-Diazoisoquinolin-3-ones.

    Qi, Minghui / Suleman, Muhammad / Xie, Jianwei / Lu, Ping / Wang, Yanguang

    The Journal of organic chemistry

    2022  Volume 87, Issue 6, Page(s) 4088–4096

    Abstract: We report a simple, efficient, and highly selective C-H bond insertion of copper carbenes ... ...

    Abstract We report a simple, efficient, and highly selective C-H bond insertion of copper carbenes generated
    Language English
    Publishing date 2022-02-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c02905
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