期刊
ORGANIC LETTERS
卷 20, 期 6, 页码 1684-1687出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.8b00530
关键词
-
资金
- National Natural Science Foundation of China [21421062, 21502098, 21672105, 21772098]
A radical C-H arylation reaction of oxazoles with (hetero)aryl iodides using Cs2CO3 as base/electron donor and 1,1'-bis-(diphenylphosphino) ferrocene (dppf) as a catalytic SET mediator is reported. The overall reaction likely follows the general base-promoted homolytic aromatic substitution mechanism through a radical-chain pathway. DFT calculations suggest that dppf forms a complex with CsCO3-, enhancing its SET reducing ability to generate an aryl radical from Arl.
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