Reinvestigation of a Catalytic, Enantioselective Alkene Dibromination and Chlorohydroxylation
作者:Scott E. Denmark、Nessa Carson
DOI:10.1021/acs.orglett.5b02650
日期:2015.12.4
reactions from oft-cited literature studies are described. The reactions were performed with full fidelity to the original report wherever possible. Analysis of the enantiomeric composition was performed by chiral stationary phase HPLC or SFC (CSP-HPLC or CSP-SFC), as opposed to the original report, which used chiral shift reagent NMR spectroscopy. After careful study, the reported levels of enantioselectivity
描述了从经常引用的文献研究中尝试再现八种推定的,对映选择性的二溴化和氯羟基化反应的尝试。反应尽可能完全按照原始报告进行。对映体组成的分析是通过手性固定相HPLC或SFC(CSP-HPLC或CSP-SFC)进行的,与原始报告相反,该报告使用了手性位移试剂NMR光谱。经过仔细研究,发现报告的对映选择性水平不正确。讨论了假阳性结果的可能解释。