Improved Conditions for the Proline-Catalyzed Aldol Reaction of Acetone with Aliphatic Aldehydes
作者:Benjamin List、Alberto Martínez、Kristina Zumbansen、Arno Döhring、Manuel van Gemmeren
DOI:10.1055/s-0033-1340919
日期:——
The proline-catalyzed asymmetric aldol reaction between aliphatic aldehydes and acetone has, to date, remained underdeveloped. Challenges in controlling this reaction include avoiding undesired side reactions such as aldol condensation and self-aldolization. In recent years we have developed optimized conditions, which enable high yields and good to excellent enantioselectivities, and which are presented
Direct organocatalytic aldol reactions in buffered aqueous media
作者:Armando Córdova、Wolfgang Notz、Carlos F. Barbas III
DOI:10.1039/b207664k
日期:——
Organocatalytic cross-aldol reactions catalyzed by cyclic secondary amines in aqueous media provide a direct route to a variety of aldols including carbohydrate derivatives and may warrant consideration as a prebiotic route to sugars.
FRUCTOSE-6-PHOSPHATE ALDOLASE VARIANTS FOR ALDOL CARBOLIGATIONS
申请人:Consejo Superior de Investigaciones Científicas
(CSIC)
公开号:EP3388518A1
公开(公告)日:2018-10-17
The invention provides new and alternative fructose-6-phosphate aldolase (FSA) variants which enable the production of optically active building blocks with high chemoselectivity and stereoselectivity using aldehydes as starting material in aldol carboligation reactions, while avoiding the by-product formation and subsequent reactions.
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.
[EN] FRUCTOSE-6-PHOSPHATE ALDOLASE VARIANTS FOR ALDOL CARBOLIGATIONS<br/>[FR] VARIANTS DE FRUCTOSE-6-PHOSPHATE ALDOLASE POUR DES CARBOLIGATURES D'ALDOLS
申请人:CONSEJO SUPERIOR INVESTIGACION
公开号:WO2018189026A1
公开(公告)日:2018-10-18
The invention provides new and alternative fructose-6-phosphate aldolase (FSA) variants which enable the production of optically active building blocks with high chemoselectivity and stereoselectivity using aldehydes as starting material in aldol carboligation reactions, while avoiding the by-product formation and subsequent reactions.