An article , which mentions Quality Control of (2S,3S)-Butane-2,3-diol, molecular formula is C4H10O2. The compound – (2S,3S)-Butane-2,3-diol played an important role in people’s production and life., Quality Control of (2S,3S)-Butane-2,3-diol
Transition-Metal-Catalyzed Asymmetric Organic Synthesis via Polymer-Attached Optically Active Phosphine Ligands. 6. Asymmetric Hydrogenation with Polymer Catalysts Containing Optically Active Pendent Alcohols
Three acrylate comonomers, (S,S), (R,R) and racemic 1-methyl-2-hydroxypropyl acrylate (7a-c), were prepared from the corresponding isomers of 2,3-butanediol.The acrylates were copolymerized with ethylene dimethacrylate and N-acryloyl-(2S,4S)-4-(diphenylphosphino)-2-<(diphenylphosphino)methyl>pyrrolidine (8) to give cross-linked resins containing phosphinopyrrolidines and optically active alcohols.Polymers containing the 4,5-bis<(diphenylphosphino)methyl>-1,3-dioxolane unit (DIOP) were prepared by copolymerizing acrylates 7a-c with ethylene dimethacrylate and 2-p-styryl-4,5-bis<(tosyloxy)methyl>-1,3-dioxolane (1) and treating the polymers with an excess of sodium diphenylphosphide.Exchange of Rh(I) onto these polymers provided catalysts that hydrogenated 2-acetamidoacrylic acid in tetrahydrofuran.The enantiomeric excesses obtained with the polymer-bound catalysts varied with the structure of the pendent alcohol, suggesting the participation of the polymer-bound alcohol at the catalyst site to provide an alcohol-like environment.A difference in enantiomeric excess (ee) was noted when catalysts containing either R or S alcohols were used.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Quality Control of (2S,3S)-Butane-2,3-diol, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 19132-06-0, in my other articles.
Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate