Chiral separation materials based on derivatives of 6‐amino‐6‐deoxyamylose
作者:Ya‐Ya Gao、Yu‐Hang Zhang、Shan Zhang、Wei Chen、Zheng‐Wu Bai
DOI:10.1002/chir.23368
日期:2021.12
new type of chiral separation materials, in this study, 6-amino-6-deoxyamylose was used as chiral starting material with which 10 derivatives were synthesized. The amino group in 6-amino-6-deoxyamylose was selectively acylated and then the hydroxyl groups were carbamoylated yielding amylose 6-amido-6-deoxy-2,3-bis(phenylcarbamate)s, which were employed as chiral selectors (CSs) for chiral stationary
Eluent Tolerance and Enantioseparation Recovery of Chiral Packing Materials Based on Chitosan Bis(Phenylcarbamate)-(n-Octyl Urea)s for High Performance Liquid Chromatography
作者:Jing Wang、Shao-Hua Huang、Wei Chen、Zheng-Wu Bai
DOI:10.3390/molecules21111528
日期:——
capacity of the chitosan bis(phenylcarbamate)-(n-octyl urea)s in ethyl acetate, acetone and tetrahydrofuran (THF) was evaluated. Among the chitosan derivatives, the chitosan bis(3,5-dichlorophenylcarbamate)-(n-octyl urea) polymer showed the highest swelling capacity in ethyl acetate and THF. The polymer-based CSPs could be utilized with pure ethyl acetate and a normal phase containing 70% THF, but was
Chiral self-discrimination of the enantiomers of α-phenylethylamine derivatives in proton NMR
作者:Shao-Hua Huang、Zheng-Wu Bai、Ji-Wen Feng
DOI:10.1002/mrc.2406
日期:2009.5
of chiral analytes, the urea and amidederivatives of α‐phenylethylamine, were prepared. The effect of inter‐molecular hydrogen‐bonding interaction on self‐discrimination of the enantiomers of analytes has been investigated using high‐resolution 1H NMR. It was found that the ureaderivatives with double‐hydrogen‐bonding interaction exhibit not only the stronger hydrogen‐bonding interaction but also better