Correction to “Oxazaborolidinium Ion-Catalyzed Cyclopropanation of α-Substituted Acroleins: Enantioselective Synthesis of Cyclopropanes Bearing Two Chiral Quaternary Centers”
作者:Lizhu Gao、Geum-Sook Hwang、Do Hyun Ryu
DOI:10.1021/jacs.1c03211
日期:2021.4.21
reversed. The revised results were confirmed by NOE experiments and comparison of the optical rotation data with reported values after transformation. The corrected Table 3 is presented below. This correction does not affect the conclusion of the paper. Determined by 1H NMR analysis of the crude reaction mixture. Isolated yield. The ee of the product was determined by chiral HPLC or GC. Yield of the trans
第20709和20710页。在该论文的已发布版本中,2w和2x的反式:顺式比例相反。通过NOE实验以及将旋光度数据与转换后报告的值进行比较,证实了修改后的结果。校正后的表3如下所示。此更正不影响本文的结论。通过1 H NMR分析粗反应混合物确定。孤立的产量。产物的ee通过手性HPLC或GC测定。反式异构体的收率由1计算分离的异构体混合物的1 H NMR分析。以43%的产率和94%的ee获得顺式异构体。获得了作为主要产物的顺式异构体,并且通过对分离的异构体混合物的1 H NMR分析来计算顺式异构体的产率。在提供实验细节的支持信息文件中,2w和2x的绝对配置被错误地绘制为(1 R,2 R)(第S26–S28页)。此处提供了经过更正的文件,该文件描述了(1 S,2 R)配置。可从https://pubs.acs.org/doi/10.1021/jacs.1c03211免费获得支持信息。 实验程序