Iron(III)-Catalyzed Tandem Sequential Methanol Oxidation/Aldol Coupling
作者:Vincent Lecomte、Carsten Bolm
DOI:10.1002/adsc.200505163
日期:2005.10
Iron(III)-catalyzedmethanoloxidations have been performed using hydrogen peroxide as oxidant. Formaldehyde is formed in situ and reacts subsequently with activated ketones to give α-hydroxymethyl carbonyl compounds in good yields. As side reactions iron-catalyzed α-hydroxylations have been observed.
A useful synthetic equivalent of an acetone enolate
作者:Veselin Maslak、Zorana Tokic-Vujosevic、Zorana Ferjancic、Radomir N. Saicic
DOI:10.1016/j.tetlet.2009.09.113
日期:2009.12
2-Methoxymethoxy-3-chloropropene derived organometallics act as synthetic equivalents of an acetone enolate. Indium-promoted reaction of this reagent with aldehydes affords aldol adducts in moderate to excellent yields. When the reaction was performed with zinc, aldol products were isolated in protected form as the corresponding MOM-enol ethers. (C) 2009 Elsevier Ltd. All rights reserved.
Gerdes,H. et al., Chemische Berichte, 1975, vol. 108, p. 3448 - 3460
作者:Gerdes,H. et al.
DOI:——
日期:——
Diastereoselective Nickel-Catalyzed Reductive Aldol Cyclizations Using Diethylzinc as the Stoichiometric Reductant: Scope and Mechanistic Insight
作者:Pekka M. Joensuu、Gordon J. Murray、Euan. A. F. Fordyce、Thomas Luebbers、Hon Wai Lam
DOI:10.1021/ja0775624
日期:2008.6.1
In the presence of diethylzinc as a stoichiometric reductant, Ni(acac) 2 functions as an efficient precatalyst for the reductive aldol cyclization of alpha,beta-unsaturated carbonyl compounds tethered to a ketone electrophile through an amide or an ester linkage. The reactions are tolerant of a wide range of substitution at both alpha,beta-unsaturated carbonyl and ketone components and proceed smoothly