Abstract Benzal chlorides and benzal bromides were conveniently synthesized by reaction of aryl aldehydes with a Vilsmeier type reagent formed in situ by reduction of CC14 or CBr4 in dimethylformamide (DMF) as solvent.
Epoxide Formation by Indirect Electroreductive Coupling between Aldehydes or Ketones and Activated<i>gem</i>-Dichloro Compounds
作者:J. P. Paugam、S. Oudeyer、E. Léonel、J.-Y. Nédélec
DOI:10.1055/s-2004-815915
日期:——
Epoxides are prepared by indirect electroreductive coupling of carbonyl compounds (aldehydes or ketones) and activated gem-dichloro compounds. This process is more efficient with aryl ketones than with aryl aldehydes. Though yields are only moderate, this method offers the valuable advantage of avoiding the use of strong bases or peroxides.
Oxygen transfer from sulfoxide: formation of aromatic aldehydes from dihalomethylarenes
作者:Wei Li、Jianchang Li、Dianne DeVincentis、Tarek S. Mansour
DOI:10.1016/j.tetlet.2003.11.072
日期:2004.1
The conversion of dihalomethylarenes to the corresponding aldehydes is accomplished conveniently by using sulfoxides as the oxygen donor under neutral conditions.