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
Asymmetric aldol addition of simple aldehydes and ketones to electrophiles is a cornerstone reaction for the synthesis of unusual sugars and chiral buildingblocks. We investigated d-fructose-6-phosphate aldolase from E. coli (FSA) D6X variants as catalysts for the aldol additions of ethanal and nonfunctionalized linear and cyclic aliphatic ketones as nucleophiles to nonphosphorylated hydroxyaldehydes
FRUCTOSE-6-PHOSPHATE ALDOLASE VARIANTS FOR ALDOL CARBOLIGATIONS
申请人:CONSEJO SUPERIOR DE IVESTIGACIONES CIENTIFICAS (CSIC)
公开号:US20200165640A1
公开(公告)日:2020-05-28
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.