期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 348, 期 6, 页码 705-708出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200505464
关键词
arylation; furans; gold; mercury; thallium; ytterbium
Gold(III) chloride, mercury(II) perchlorate, thallium(III) perchlorate and p-toluenesulfonic acid were found to efficiently catalyze the condensation of two furans with aldehydes or acetone. The olefinic unit of alpha,beta-unsaturated carbonyl compounds reacts faster than the carbonyl group, other olefins do not react selectively. The first (addition) step is rate-limiting, the second (substitution) step is much faster.
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