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Construction of isoxazolone-fused phenanthridines via Rh-catalyzed cascade C–H activation/cyclization of 3-arylisoxazolones with cyclic 2-diazo-1,3-diketones

Autor: Yongjia Shang, Tongtong Zhou, Xinwei He, Tingting Yang, Youpeng Zuo, Wangcheng Hu, Shiwen Zhang

Publikováno v: Organic & Biomolecular Chemistry. 19:552-556

A Rh(III)-catalyzed cascade C–H activation/intramolecular cyclization of 3-aryl-5-isoxazolones with cyclic 2-diazo-1,3-diketones was described, leading to the formation of isoxazolo[2,3-f]phenanthridine skeletons. The protocol features the simultan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f3ac931a52f4efc66d0d0d5f633ed5c
https://doi.org/10.1039/d0ob02310h

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Palladium-Catalyzed Cascade Decarboxylative Amination/6-endo-dig Benzannulation of o-Alkynylarylketones with N-Hydroxyamides To Access Diverse 1-Naphthylamine Derivatives

Autor: Wangcheng Hu, Youpeng Zuo, Tongtong Zhou, Qiang Tang, Yongjia Shang, Xinwei He

Publikováno v: Organic Letters. 22:3890-3894

An efficient and practical one-pot strategy to produce highly substituted 1-naphthylamines via sequential palladium-catalyzed decarboxylative amination/intramolecular 6-endo-dig benzannulation reactions has been described. In this reaction, a broad r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6b57aa9d45999c950b624d8032cfe71
https://doi.org/10.1021/acs.orglett.0c01183

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Rh(III)-Catalyzed Relay Double Carbenoid Insertion and Diannulation of Sulfoximine Benzamides with α-Diazo Carbonyl Compounds: Access to Furo[2,3-c]isochromenes

Autor: Chen Chen, Yongjia Shang, Shunfan Li, Wangcheng Hu, Chen Yang, Tongtong Zhou, Youpeng Zuo, Jian Wang, Xinwei He

Publikováno v: Organic Letters. 22:2506-2511

An efficient rhodium-catalyzed construction of furo[2,3-c]isochromene scaffolds through tandem double carbenoid insertion and diannulation of sulfoximine benzamides with α-diazo carbonyl compounds ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::391e33745148b35f64a70cf0a2f85896
https://doi.org/10.1021/acs.orglett.9b04659

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Rh-Catalyzed C–H activation/intramolecular condensation for the construction of benzo[f]pyrazolo[1,5-a][1,3]diazepines

Autor: Xinwei He, Mengqing Xie, Youpeng Zuo, Yongjia Shang, Ruxue Li, Yi Ning, Qiang Tang, Jian Wang

Publikováno v: Organic & Biomolecular Chemistry. 18:2893-2901

A novel and mild Rh(iii)-catalyzed C-H activation/intramolecular condensation of 1-aryl-1H-pyrazol-5-amines with cyclic 2-diazo-1,3-diketones was developed, giving access to various important benzo[f]pyrazolo[1,5-a][1,3]diazepine scaffolds through se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2ab39654e0abdf1a309fd25d0590e70
https://doi.org/10.1039/d0ob00382d

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Catalyst-Free Synthesis of 2,3-Dihydrobenzofurans via a Formal [4+1] Annulation of Propargylamines with Sulfur Ylides

Autor: Youpeng Zuo, Mengqing Xie, Xinwei He, Yongjia Shang, Ruxue Li, Qiang Tang

Publikováno v: The Journal of Organic Chemistry. 84:11623-11638

A simple, general route to the 2,3-dihydrobenzofurans substituted at C3 by an aryethynyl or aryl group, starting from propargylamine and its derivatives with benzoyl sulfonium salts, has been developed. This reaction involved an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::105ec85f478c71bb4c472850d5dafca4
https://doi.org/10.1021/acs.joc.9b01557

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