Synthesis of 4-Isoxazolines through Gold(I)-Catalyzed Cyclization of Propargylic N-Hydroxylamines

B. Chandrasekhar; Sewon Ahn; Jae Sang Ryu

doi:10.1021/acs.joc.6b01499

Synthesis of 4-Isoxazolines through Gold(I)-Catalyzed Cyclization of Propargylic N-Hydroxylamines

B. Chandrasekhar, Sewon Ahn, Jae Sang Ryu

Department of Pharmaceutical Sciences

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

New catalytic methods for the synthesis of 4-isoxazolines have been developed via catalytic intramolecular cyclizations of propargylic N-hydroxylamines. The reactions proceed rapidly in less than 1 h at room temperature in the presence of 5 mol % (PPh₃)AuCl/5 mol % AgOTf or 5 mol % (PPh₃)AuNTf₂. This process features an efficient route to 4-isoxazolines with high yields, short reaction times, and mild reaction conditions.

Original language	English
Pages (from-to)	6740-6749
Number of pages	10
Journal	Journal of Organic Chemistry
Volume	81
Issue number	15
DOIs	https://doi.org/10.1021/acs.joc.6b01499
State	Published - 5 Aug 2016

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© 2016 American Chemical Society.

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title = "Synthesis of 4-Isoxazolines through Gold(I)-Catalyzed Cyclization of Propargylic N-Hydroxylamines",

abstract = "New catalytic methods for the synthesis of 4-isoxazolines have been developed via catalytic intramolecular cyclizations of propargylic N-hydroxylamines. The reactions proceed rapidly in less than 1 h at room temperature in the presence of 5 mol % (PPh3)AuCl/5 mol % AgOTf or 5 mol % (PPh3)AuNTf2. This process features an efficient route to 4-isoxazolines with high yields, short reaction times, and mild reaction conditions.",

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N2 - New catalytic methods for the synthesis of 4-isoxazolines have been developed via catalytic intramolecular cyclizations of propargylic N-hydroxylamines. The reactions proceed rapidly in less than 1 h at room temperature in the presence of 5 mol % (PPh3)AuCl/5 mol % AgOTf or 5 mol % (PPh3)AuNTf2. This process features an efficient route to 4-isoxazolines with high yields, short reaction times, and mild reaction conditions.

AB - New catalytic methods for the synthesis of 4-isoxazolines have been developed via catalytic intramolecular cyclizations of propargylic N-hydroxylamines. The reactions proceed rapidly in less than 1 h at room temperature in the presence of 5 mol % (PPh3)AuCl/5 mol % AgOTf or 5 mol % (PPh3)AuNTf2. This process features an efficient route to 4-isoxazolines with high yields, short reaction times, and mild reaction conditions.

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Synthesis of 4-Isoxazolines through Gold(I)-Catalyzed Cyclization of Propargylic N-Hydroxylamines

Abstract

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