Measurement and optimization of organic chemical reaction yields by GC–MS with supersonic molecular beams
作者:Aviv Amirav、Alexander Gordin、Youlia Hagooly、Shlomo Rozen、Bogdan Belgorodsky、Boaz Seemann、Hanit Marom、Michael Gozin、Alexander B. Fialkov
DOI:10.1016/j.tet.2012.05.031
日期:2012.7
chemical reaction yields. In this manuscript, four different organic synthetic reactions were studied and are described. Based on the collected data, we were able to better understand how the reaction conditions should be optimized in order to maximize the yields and purity of target products. Consequently, we propose that GC–MS with SMB can serve as a novel tool for the fast optimization of chemical
一种新型气相色谱质谱仪(GC-MS)用于有机化学反应的半在线监测,以优化其产率,阐明机理,并获得有关反应产物身份和纯度的信息。它与反应混合物一起使用,无需进行NMR所需的事先分离和纯化,从而节省了时间和精力。我们独特的GC-MS(称为5975-SMB超音速GC-MS)基于具有超音速分子束(SMB)的MS与GC的接口,并且基于样品分子在通过开放电子电离离子源的轴向飞行过程中作为振动冷分子的电离。带有SMB的GC–MS被证明可以显着扩展适用于分析的化合物的范围,实际上总是产生分子离子,从而可以进行快速有效的GC–MS分析,并通过同位素丰度分析和单位质量分辨率四极杆质谱仪提供元素公式。此外,它独特地提供了对所有化合物的均匀响应,这一功能对于化学反应产率的测量至关重要。在该手稿中,研究并描述了四种不同的有机合成反应。根据收集到的数据,我们能够更好地了解应如何优化反应条件,以最大程度地提高目标产品的