Copper‐Catalyzed Radical Enantioselective Carbo‐Esterification of Styrenes Enabled by a Perfluoroalkylated‐PyBox Ligand
作者:Zaicheng Nie、Mong‐Feng Chiou、Jinfeng Cui、Yanjie Qu、Xiaotao Zhu、Wujun Jian、Haigen Xiong、Yajun Li、Hongli Bao
DOI:10.1002/anie.202202077
日期:2022.7.11
The radicalenantioselective carbo-esterification of styrenesenabled by a newly developed perfluoroalkylated-PyBox ligand and copper catalysis is reported. Mechanistic studies reveal that this reaction is a rare example of an efficient ligand-decelerated system, in which the ligand decelerates the reaction, but the reaction is still efficient with reduced amounts of ligand.
Cu(<scp>ii</scp>)/SPDO complex catalyzed asymmetric Baeyer–Villiger oxidation of 2-arylcyclobutanones and its application for the total synthesis of eupomatilones 5 and 6
作者:Chang-Sheng Zhang、Ya-Ping Shao、Fu-Min Zhang、Xue Han、Xiao-Ming Zhang、Kun Zhang、Yong-Qiang Tu
DOI:10.1039/d2sc02079c
日期:——
3-disubstituted cyclobutanones of Baeyer–Villigeroxidation catalyzed by a Cu(II)/SPDO complex is reported for the first time, producing normal lactones in excellent enantioselectivities (up to 96% ee) and regioselectivities (up to >20/1), along with unreacted ketones in excellent enantioselectivities (up to 99% ee). The current transformation features a wide substrate scope. Moreover, catalytic asymmetric total