高分辩气相色谱法手性固定相拆分α-羟基酮光学异构体

摘要

Using the cyclodextrin bonded polysiloxane (bikis〔（2,6-di-O-pentyl-3-O-hex-6-O-enyl)-pentakis(2,6-di-O-pentyl-3-O-methyl)-β-cyclodextrm-polysiloxane〕) as gas chromatographic stationary phase, α-hydroxy acetones were separated and the values of the enantiomeric excess(e.e) of 3-hydroxy-2-butanone were determined. The results showed that the high resolution gas chromatography (HRGC) using the chiral gas chromatographic stationary phase could determine the productive rate of the asymmetric hydrogenaton reaction and evaluate the enantoselectivity of the catalyst system.%使用高分辩气相色谱法环糊精接枝聚硅氧烷(二环〔2，6-二-O-戊基-3-O-己烯基(-5)〕五环〔2，6-二-O-戊基-3-O-甲基〕-β-环糊精-聚硅氧烷)作手性固定相，实现了α-羟基酮的有效拆分，并测定了一系列光学活性3-羟基-2-丁酮的对映体过剩值(e.e值)。结果表明，所选取的手性固定相对测定此类不对称催化反应产物的光学产率，评价催化体系的手性选择性均具有较好的效果。