Výsledky vyhledávání - "Geng-Hua Chang"

Enantioselective Synthesis of Polysubstituted Benzopyrano[3,4-c]pyrrolidine Frameworks via [3 + 2] Cycloaddition of Azomethine Ylides and Coumarin Derivatives

Autor: Chein Yi Wang, Wenwei Lin, Geng Hua Chang, Yi Ling Tsai, G. Madhusudhan Reddy

Publikováno v: The Journal of Organic Chemistry. 81:10071-10080

An enantioselective synthesis of benzopyrano[3,4-c]pyrrolidine derivatives via organocatalyzed [3 + 2] cycloaddition has been achieved. Cinchona alkaloid-derived organocatalysts as Brønsted bases have been examined for this asymmetric cycloaddition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c18cf9bca1070936f1ea90991b61d47
https://doi.org/10.1021/acs.joc.6b02041

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Preparation of Furo[3,2-c]coumarins from 3-Cinnamoyl-4-hydroxy-2H-chromen-2-ones and Acyl Chlorides: A Bu3P-Mediated C-Acylation/Cyclization Sequence

Autor: Shao Hao Hong, Lennart Möhlmann, Wenwei Lin, Mei Chun Yang, Chia Jui Lee, Geng Hua Chang, Cheng Che Tsai

Publikováno v: Angewandte Chemie. 127:8622-8625

A Bu3P-mediated cyclization reaction of 3-cinnamoyl-4-hydroxy-2H-chromen-2-ones though electrophilic addition of acyl chlorides towards the synthesis of highly functionalized furo[3,2-c]coumarins bearing a phosphorus ylide moiety is described. These

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49cf5320c5442ff4e2b6e30e38272c4d
https://doi.org/10.1002/ange.201502789

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ChemInform Abstract: Organocatalytic Enantioselective Synthesis of Tetrahydrofluoren-9-ones via Vinylogous Michael Addition/Henry Reaction Cascade of 1,3-Indandione-Derived Pronucleophiles

Autor: Chia-Jui Lee, Lennart Moehlmann, Geng-Hua Chang, Wenwei Lin, G. Madhusudhan Reddy

Publikováno v: ChemInform. 47

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ad29b7914d5c24e8c97ba51ab410e54
https://doi.org/10.1002/chin.201627109

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Organocatalytic Enantioselective Synthesis of Tetrahydrofluoren-9-ones via Vinylogous Michael Addition/Henry Reaction Cascade of 1,3-Indandione-Derived Pronucleophiles

Autor: Lennart Möhlmann, G. Madhusudhan Reddy, Geng Hua Chang, Chia Jui Lee, Wenwei Lin

Publikováno v: Organic letters. 18(4)

An unprecedented organocatalytic enantioselective vinylogous Michael addition/Henry cyclization cascade is presented for the synthesis of highly substituted tetrahydrofluoren-9-ones 3 employing novel 1,3-indandione-derived pronucleophiles 1a–g and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f59241c104a4fdeadb75670f242d7225
https://pubmed.ncbi.nlm.nih.gov/26841132

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