Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 82, Issue 7, Pages 3935-3942Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.7b00076
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Funding
- National Natural Science Foundation of China [21572225]
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An unprecedented Tf2NH-catalyzed formal [3 + 2] cycloaddition of ynamides with dioxazoles was developed to construct various polysubstituted 4-aminooxazoles. This approach features a metal-free catalytic bimolecular assembly of oxazole motifs; a low-cost catalyst, exceptionally mild reaction conditions, a very short reaction time, a broad substrate scope, and high efficiency. This metal-free protocol may find applications in pharmaceutical-oriented synthesis.
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