期刊
TETRAHEDRON LETTERS
卷 53, 期 6, 页码 612-615出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2011.11.110
关键词
Benzisoxazolo[2,3-a]pyridinium; Palladium-catalyzed direct arylation; Pyridine N-oxide; Microwave synthesis
资金
- NIH from National Center for Research Resources [P20 RR-016461]
The synthesis of a variety of novel benzisoxazolo[2,3-a]pyridinium tetrafluoroborates is described. These compounds are conveniently prepared from pyridine N-oxide via a microwave-promoted palladium-catalyzed direct arylation of pyridine N-oxide with 2-bromoacetanilides to give 2-(2-acetamidoaryl)pyridine N-oxides, followed by hydrolysis, diazotization, and intramolecular displacement of nitrogen which affords the target benzisoxazolo[2,3-a]pyridinium tetrafluoroborates. (C) 2011 Elsevier Ltd. All rights reserved.
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