期刊
TETRAHEDRON
卷 61, 期 7, 页码 1909-1918出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2004.11.083
关键词
gallic acid; multi-functionalization; regioselective bromination; alpha-DDB; beta-DDB
The synthesis of mono-, di- and trisubstituted gallic acids and their ester with similar or different groups including different acetal and ketals is described. Regioselective bromination on two ortho-positions of methyl gallate, which is very crucial for many organic syntheses, was achieved in high yield and purity. The alpha- and beta-DDB were synthesized in high overall yield and purity from the regioselective bromoderivatives. (C) 2005 Elsevier Ltd. All rights reserved.
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