Condensation of 2-polyfluoroacylcycloalkanones with aldehydes and dimethylformamide-dimethylacetal

被引：7
作者：
Sevenard, DV
Khomutov, OG
Kodess, MI
Pashkevich, KI
Loop, I
Lork, E
Röschenthaler, GV
机构：
[1] Univ Bremen, Inst Inorgan & Phys Chem, D-28334 Bremen, Germany
[2] Russian Acad Sci, Ural Branch, Inst Organ Synth, Ekaterinburg 620219, Russia
来源：
AUSTRALIAN JOURNAL OF CHEMISTRY | 2001年 / 54卷 / 03期
关键词：
D O I：
10.1071/CH01027
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Polyfluorinated 1,3-diketones containing carbocycles react with aldehydes under Lewis-acid catalysis and also with dimethylformamide-dimetylacetal without catalysis, yielding exclusively (E)-configured condensation products involving the methylene group of the carbocycle. Novel trifluoromethylated chromenes are prepared from 2-trifluoroacetylcycloalkanones and salicylaldehyde. The structures of two new compounds, 2-(E)-benzylidene-6-trifluoroacetylcyclohexanone and 4-trifluoroacetyl-2,3-dihydro-1H-xantene, are confirmed by X-ray structure analysis.
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页码：157 / 163
页数：7
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