[EN] METHOD FOR THE MANUFACTURE OF COMPOUNDS CONTAINING AN a-OXY PHOSPHORUS GROUP<br/>[FR] PROCÉDÉ POUR LA FABRICATION DE COMPOSÉS CONTENANT UN GROUPE ?-OXY-PHOSPHORÉ
申请人:STRAITMARK HOLDING AG
公开号:WO2012098255A1
公开(公告)日:2012-07-26
A method for the manufacture of compounds containing an α-oxy phosphorus group is disclosed. A P-O component having at least one P-O-P moiety, whereby at least one phosphorus has the +3 oxidation state, is added in specific proportions to a compound containing an α-oxy carboxylic acid group, followed by conducting the reaction and adding water subsequently. The compounds containing an α-oxy phosphorus group formed can then be recovered.
Method for the manufacture of compounds containing an alpha-oxyphosphorus group by using an activator
申请人:Straitmark Holding AG
公开号:EP2567961A1
公开(公告)日:2013-03-13
A method for the manufacture of compounds containing an α-oxy phosphorus group is disclosed. A compound containing an α-oxy carboxylic acid group is reacted in a specific equivalent ratio with a nucleophilic P component, wherein the phosphorus atom has the oxidation state +1 or +3, whereby the compound containing an α-oxy carboxylic acid group or the nucleophilic P component or both are first reacted with an activator, followed by conducting the reaction and adding a water at the end of the reaction. The compounds containing an α-oxy phosphorus group formed are then recovered.
Dynamic Kinetic Resolution Based Asymmetric Transfer Hydrogenation of α-Alkoxy-β-Ketophosphonates. Diastereo- and Enantioselective Synthesis of Monoprotected 1,2-Dihydroxyphosphonates
作者:Se-Mi Son、Hyeon-Kyu Lee
DOI:10.1021/jo500148j
日期:2014.3.21
Dynamic kinetic resolution driven, asymmetric transfer hydrogenation reactions of a wide range of 2-substituted α-alkoxy-β-ketophosphonates 3 were observed to proceed efficiently to give the corresponding 2-substituted α-alkoxy-β-hydroxy phosphonates 4 with excellent levels of diastereo- and enantioselectivity. These processes are promoted by using well-defined, commercially available, chiral transition
Ketoreductase (KRED)-catalyzed dynamic reductive kineticresolution (DYRKR) of α-substituted-β-keto arylphosphonates was developed as a generic and stereoselective approach to synthesize chiral α-substituted-β-hydroxy arylphosphonates, with moderate-to-excellent isolated yield (up to 96%), good-to-excellent diastereoselectivity (up to >99 : <1 dr), and excellent enantioselectivity (up to >99% ee) being