期刊
ACS CATALYSIS
卷 7, 期 11, 页码 7830-7834出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.7b03078
关键词
alkyne; copper catalysis; dioxygen activation; DFT calculation; iminoxyl radical; radical cyclization
资金
- National Natural Science Foundation of China [21422205, 21632001]
- Fundamental Research Funds for the Central Universities [lzujbky-2016-ct02, lzujbky-2016-ct08]
- Program for the Changjiang Scholars and Innovative Research Team in University [IRT-15R28]
- 111 project
A facile, mild, and efficient dioxygen activation for the synthesis of isoxazoline/cyclic nitrone-featured a-ketols has been achieved by Cu-catalyzed trifunctionalization of internal unactivated alkynes of unsaturated ketoximes at room temperature. O-18 isotope tracing and DFT calculation reveal that a cascade iminoxyl radical dichotomous 5-exo-dig cyclization/oxygen activation/peroxy radical 4-endo-trig cyclization process was involved in the reaction.
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