期刊
ORGANIC PROCESS RESEARCH & DEVELOPMENT
卷 11, 期 6, 页码 951-955出版社
AMER CHEMICAL SOC
DOI: 10.1021/op700176n
关键词
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A scaleable and highly regioselective C-4 bromination of 5-substituted oxazoles is described. The use of DMF as solvent played a critical role in significantly improving the C-4/C-2 bromination ratio. The resulting 4-bromooxazoles were shown to be good Suzuki-Miyaura coupling partners with arylboronic acids. Furthermore, a simple and convenient method that employs triethylamine efficiently purged residual levels of palladium and iron to less than 10 ppm.
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