This type of reactivity has quickly become one of the cornerstones of modern catalysis .In a patent, Quality Control of (2S,3S)-Butane-2,3-diol, name is (2S,3S)-Butane-2,3-diol, belongs to chiral-oxygen-ligands compound, introducing its new discovery. Quality Control of (2S,3S)-Butane-2,3-diol
Sorption and selective chromatographic properties of isomer-selective composite sorbent based on a eutectic mixture of nematic liquid crystals and perbenzoylated beta-cyclodextrin
Mesomorphic, sorption, and selective properties of a three-component sorbent based on a mixture of nematic (N) liquid crystals of 4-methoxy-4?-ethoxyazoxybenzene (MEAB) and 4,4?-diethoxyazoxybenzene (azoxyphenetol, AOP) of an eutectic composition and heptakis-(2,3,6-tri-O-benzoyl)-beta-cyclodextrin (Bz-beta-CD) are studied. For 30 organic compounds of different classes with linear and cyclic molecular structures, including optical isomers of limonene, pinene, camphene, and butanediol-2,3, thermodynamic functions are determined for their gas-phase sorption using a three-component MEAB-AOP-Bz-beta- CD sorbent (62: 28: 10 wt %). It is found that the investigated sorbent possesses high structural selectivity (alphap/m = 1.128-1.059, 100-130C, N) and moderate enantioselectivity (1.07-1.02) within a broad temperature range (95-170C) including both mesomorphic and isotropic phases of the sorbent. It is shown that the enantioselectivity of the sorbent is apparent under conditions of both increasing retention when a chiral Bz-beta-CD additive is introduced into the MEAB-AOP system (limonenes, pinenes, camphenes) and decreasing retention (butanediols-2,3).
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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate