期刊
ORGANIC CHEMISTRY FRONTIERS
卷 9, 期 20, 页码 5523-5529出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2qo01101h
关键词
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资金
- Natural Science Foundation of Zhejiang Province [LZ20B020001, LY20B020006]
- National Natural Science Foundation of China [22071218]
A visible light induced reductive alkyltrifluoromethylation method for the synthesis of highly functionalized trifluoromethylated cyclopentanones has been developed.
Traditional alkyne carbotrifluoromethylation protocols lead to the production of trifluoromethylated alkenes, while new reaction modes remain to be explored. Herein, a visible light induced reductive alkyltrifluoromethylation of ynones with the Langlois reagent is developed, providing a regio- and diastereoselective access to highly functionalized trifluoromethylated cyclopentanones at room temperature. Mechanistic studies suggest a radical pathway involving the regioselective trifluoromethylation of C-C triple bonds, 1,5-HAT, 5-endo-trig closure, single electron transfer reduction, and protonation.
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