期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 9, 期 14, 页码 5288-5296出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ob05223c
关键词
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资金
- National Natural Science Foundation of China [20772114]
- Innovation Fund for Outstanding Scholar of Henan Province [0621001100]
Efficient and facile catalytic protocols for chlorination and ligand-directed ortho-acetoxylation of 2-arylbenzoxazoles have been developed. The chlorination is not a ligand-directed ortho-functionalization, but an electrophilic substitution process in the benzo ring of the benzoxazole moiety. Meanwhile, the acetoxylation exhibited high regioselectivity for the substrates containing a meta-substituent and occurred at the less sterically hindered ortho-C-H bond of the directing group.
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