Morpholinium Trifluoroacetate-Catalyzed Aldol Condensation of Acetone with both Aromatic and Aliphatic Aldehydes
作者:Kristina Zumbansen、Arno Döhring、Benjamin List
DOI:10.1002/adsc.200900902
日期:——
We report a highly efficient, general and practical method for the aldolcondensation of acetone with aromatic and aliphatic aldehydes, using morpholinium trifluoroacetate as a catalyst.
Wittig Reactions of Stabilized Phosphorus Ylides with Aldehydes in Water
作者:Jinlong Wu、Da Zhang、Shaoyong Wei
DOI:10.1081/scc-200054816
日期:2005.5
Abstract The Wittigreactions of three stabilized phosphorus ylides with aldehydes in water were investigated. Most of the olefination reactions completed within 5–60 min in refluxing water in the presence of 1.2 M LiCl to afford the olefin products in 65–98% yields. It was found that the Wittigreactions of stabilized phosphorus ylides with aldehydes in water were faster than those carried out in
A highly selective synthesis of (Z)-α,β-unsaturated ketones
作者:Wensheng Yu、Mei Su、Zhendong Jin
DOI:10.1016/s0040-4039(99)01393-3
日期:1999.9
New Wadsworth-Emmons reagents, bis(2,2,2-trifluoroethyl)-(2-oxopropyl)phosphonate 6 and bis(2,2,2-trifluoroethyl)-(1-methyl-2-oxopropyl)-phosphonate 7 were prepared and their reactions with aldehydes yielded disubstituted and trisubstituted (Z)-alpha,beta-unsaturated ketones. (C) 1999 Elsevier Science Ltd. All rights reserved.
JABRI, N.;ALEXAKIS, A.;NORMANT, J. F., TETRAHEDRON LETT., 1983, 24, N 46, 5081-5084