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2004
Benzofuran derivatives
R 0070
Electrochemical Partial Fluorination of Organic Compounds. Part 74. Efficient
Synthesis of 2-Fluoro- and 2,3-Difluoro-2,3-dihydrobenzofuran Deriva48- 102 Anodic
tives. — In contrast to the unsubstituted compounds 3-substituted benzofurans can
efficiently undergo anodic fluorination to afford 2-fluorinated and 2,3-difluorinated
derivatives. Under basic conditions the latter can undergo dehydrofluorination to give
nonaromatic benzofuranylidenes of type (XII) instead of aromatic isomers. The products are of synthetic and biological interest. — (DAWOOD, K. M.; FUCHIGAMI*,
T.; J. Org. Chem. 69 (2004) 16, 5302-5306; Dep. Electron. Chem., Tokyo Inst.
Technol., Midori, Yokohama 226, Japan; Eng.) — Jannicke
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