Enantioselective Synthesis of Biaryl Atropisomers by Pd‐Catalyzed C−H Olefination using Chiral Spiro Phosphoric Acid Ligands
作者:Jun Luo、Tao Zhang、Lei Wang、Gang Liao、Qi‐Jun Yao、Yong‐Jie Wu、Bei‐Bei Zhan、Yu Lan、Xu‐Feng Lin、Bing‐Feng Shi
DOI:10.1002/anie.201902126
日期:2019.5.13
in the field of enantioselective C−H activation. Herein, we reported the synthesis of axially chiral biaryls by Pd‐catalyzed atroposelective C−H olefination. A novel chiral spiro phosphoric acid, STRIP, was identified as a superior ligand for this transformation. A broad range of axially chiral quinoline derivatives were synthesized in good yields with excellent enantioselectivities (up to 98 % ee)
同时调节反应性和有效控制立体选择性的合适配体的发现是对映选择性CH活化领域的中心课题。在本文中,我们报道了通过Pd催化的Atrooselective CH烯化合成轴向手性联芳基。新型手性螺磷酸STRIP被确定为该转化的优良配体。以高收率和优异的对映选择性(高达98%ee)合成了多种轴向手性喹啉衍生物。使用密度泛函理论来获得对该反应中对映选择性的理论理解。