Online coupling of enantioselective capillary gas chromatography with proton nuclear magnetic resonance spectroscopy
作者:Maximilian Kühnle、Diana Kreidler、Karsten Holtin、Harri Czesla、Paul Schuler、Volker Schurig、Klaus Albert
DOI:10.1002/chir.20840
日期:2010.10
The hyphenation of enantioselective capillary gas chromatography and mass spectrometry is not always sufficient to distinguish between structural isomers, thus requiring peak identification by NMR spectroscopy. Here the first online coupling of enantioselective capillary gas chromatography with proton nuclear resonance spectroscopy is described for the unfunctionalized chiral alkane 2,4‐dimethylhexane
对映选择性毛细管气相色谱和质谱联用并不总是足以区分结构异构体,因此需要通过NMR光谱进行峰鉴定。这里对映选择性毛细管气相色谱法与质子核共振光谱的所述第一在线耦合为未官能化的手性烷烃2,4-二甲基己烷解决上octakis(6-描述ø -甲基-2,3-二- ö-戊基)-γ-环糊精在60°C下。NMR可以区分结构和构型异构体(非对映异构体和对映异构体)。对映异构体在不同的保留时间显示相同的光谱,从而可以间接鉴定这些未官能化的烷烃。提出的方法仍处于早期开发阶段,将来将需要对仪器进行优化。手性2010。©2010 Wiley-Liss,Inc.。