1,2-Bis(trifluoromethylthiolation) of Aromatic Epoxides with AgSCF<sub>3</sub>
作者:Yin-Li Liu、Feng-Ling Qing、Xiu-Hua Xu
DOI:10.1002/ejoc.201901836
日期:2020.2.28
An unprecedented transformation of aromatic epoxides to 1,2‐bis(trifluoromethylthiolated) products was reported. This reaction proceeded through the tandem ring‐opening and deoxytrifluoromethylthiolation processes, affording the target products in moderate to high yields.
Determining the Enantioselectivity of Chiral Catalysts by Mass Spectrometric Screening of Their Racemic Forms
作者:Christian Ebner、Constanze A. Müller、Christian Markert、Andreas Pfaltz
DOI:10.1021/ja111700e
日期:2011.4.6
The enantioselectivity of a chiral catalyst can be determined from its racemic form by massspectrometricscreening of a nonequal mixture of two mass-labeled quasienantiomeric substrates. The presented method opens up new possibilities for evaluating catalyst structures that are not readily available in enantiomerically pure form.