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–Villiger oxidation 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
首次报道了由 Cu( II )/SPDO 复合物催化的 2-芳基取代或 2,3-二取代环丁酮的经典动力学拆分,产生具有优异对映选择性(高达 96 % ee) 和区域选择性(高达 >20/1),以及具有出色对映选择性(高达 99% ee)的未反应酮。当前的转换具有广泛的底物范围。此外,天然 eupomatilones 5和6的催化不对称全合成是从市售的 3-methylcyclobutan-1-one 分九步实现的。