Palladium‐Catalyzed Construction of Quaternary Stereocenters by Enantioselective Arylation of γ‐Lactams with Aryl Chlorides and Bromides
作者:Carina I. Jette、Irina Geibel、Shoshana Bachman、Masaki Hayashi、Shunya Sakurai、Hideki Shimizu、Jeremy B. Morgan、Brian M. Stoltz
DOI:10.1002/anie.201814475
日期:2019.3.22
developed for this transformation, allowing for the use of either aryl chlorides or bromides as electrophiles. Utilizing a highly electron‐rich dialkylphosphine ligand we have been able to construct α‐quaternary centers in good yields (up to 91 % yield) and high enantioselectivities (up to 97 % ee).
在这里,我们报道了α-取代的γ-内酰胺的第一个Pd催化的对映选择性芳基化反应。为该转化开发了两组条件,从而允许使用芳基氯化物或溴化物作为亲电子试剂。通过使用高度富电子的二烷基膦配体,我们能够以高收率(最高91%的收率)和高对映选择性(最高97%ee)构建α-季中心 。