Výsledky vyhledávání - "Man Pan Leung"

Recent advances in rhodium-catalysed cross-dehydrogenative-coupling between two C(sp2)–H bonds

Autor: Yi Ling Tsang, Pui Ying Choy, Man Pan Leung, Xinwei He, Fuk Yee Kwong

Publikováno v: Organic Chemistry Frontiers. 9:1992-2012

A comprehensive review overviewing the advances in Rh-catalyzed cross-dehydrogenative-coupling in the period of 2016–2021 is presented.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32fa2f788a14dd7fd6bb3af4f6ab9696
https://doi.org/10.1039/d1qo01948a

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DMAP-Catalyzed Annulation Approach for Modular Assembly of Furan-Fused Chromenes

Autor: Xinwei He, Man Pan Leung, Fuk Yee Kwong, Junya Wang, Yongjia Shang, Tianyi Liu, Pui Ying Choy, Ruxue Li, On Ying Yuen

Publikováno v: Organic Letters. 22:9444-9449

With a tandem DMAP-catalyzed reaction between o-AQM, in which it is generated in situ from propargylic amine, and acyl carbene surrogate (from pyridinium ylide), a variety of polyarylated chromenes are assembled in good yields. This process does not

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b723beea4a8911b321714aebd105bcfb
https://doi.org/10.1021/acs.orglett.0c03374

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Rapid Access of Alkynyl and Alkenyl Coumarins via a Dipyridinium Methylide and Propargylamine Cascade Reaction

Autor: Fuk Yee Kwong, On Ying Yuen, Tianyi Liu, Man Pan Leung, Xinwei He, Yongjia Shang, Ruxue Li, Pui Ying Choy

Publikováno v: Organic Letters. 22:7348-7352

A DMAP-catalyzed cascade approach allowing facile assembly of alkynyl coumarins is reported. By virtue of reactive o-AQM (in situ generated from modular propargylamine) and a new synthetic equivale...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94395e8171135d68aacf7effdeafd374
https://doi.org/10.1021/acs.orglett.0c02674

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Facile Assembly of Carbazolyl-Derived Phosphine Ligands and Their Applications in Palladium-Catalyzed Sterically Hindered Arylation Processes

Autor: Man Pan Leung, Wing In Lai, Kin Boon Gan, Fuk Yee Kwong, Pui Ying Choy

Publikováno v: Organic Process Research & Development. 23:1602-1609

Phosphine ligands embodying a carbazolyl motif have been found to be successful in many palladium-catalyzed biaryl syntheses and direct C–H bond arylation processes. Here, a practical scaled-up syn...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f07352612e2b635a6caf9fed6ad28eb3
https://doi.org/10.1021/acs.oprd.9b00246

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Sterically Hindered Amination of Aryl Chlorides Catalyzed by a New Carbazolyl-Derived P,N-Ligand-Composed Palladium Complex

Autor: Wing In Lai, Fuk Yee Kwong, Man Pan Leung, Pui Ying Choy

Publikováno v: Synthesis. 51:2678-2686

A family of 2-(9H-carbazol-9-yl)phenyl-based phosphine ligands were synthesized and their efficacy in promoting the steric hindered Buchwald–Hartwig amination was evaluated. In the presence of Pd(OAc)2 (0.03–1.0 mol%) associated with the newly de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b44d7bce354b9e7e415119b0f39355f9
https://doi.org/10.1055/s-0037-1611534

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Palladium-Catalyzed Direct Arylation of Polyfluoroarenes for Accessing Tetra-ortho-Substituted Biaryls: Buchwald-type Ligand Having Complementary −PPh2 Moiety Exhibits Better Efficiency

Autor: Man Pan Leung, Fuk Yee Kwong, On Ying Yuen, Raymond Wai-Yin Sun, Chau Ming So

Publikováno v: The Journal of Organic Chemistry. 83:9008-9017

The first general examples of direct C–H arylation of electron-deficient polyfluoroarenes with challenging di-ortho-substituted aryl(heteroaryl) chlorides for tetra-ortho-substituted biaryl synthesis are reported. Key to success is the use of Buchw

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02d4c063df16dc620db227b675a83c0a
https://doi.org/10.1021/acs.joc.8b01176

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