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Download fileSynthesis of 4‑Isoxazolines through Gold(I)-Catalyzed Cyclization of Propargylic N‑Hydroxylamines
journal contribution
posted on 2016-07-15, 00:00 authored by B. Chandrasekhar, Sewon Ahn, Jae-Sang RyuNew
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.