Bis-TADDOLs as bifunctional organocatalysts for trifluoromethylation of aldehydes and ring-opening of cyclohexene oxide with p-toluidine
作者:Yuri N. Belokon、Zalina T. Gugkaeva、Victor I. Maleev、Margarita A. Moskalenko、Michael North、Alan T. Tsaloev
DOI:10.1016/j.tetasy.2010.05.030
日期:2010.7
A set of bis-TADDOLs, in which two TADDOL moieties are connected by different linkers, have been prepared. A great dependence of the catalytic activities of the bis-TADDOLs on the distance between the TADDOL moieties was found by the addition of trifluoromethyltrimethylsilane to benzaldehyde and ring-opening of cyclohexene oxide with or without alkali metal salts added. (C) 2010 Elsevier Ltd. All rights reserved.