Enantioselective Synthesis of Isoxazolines Enabled by Palladium‐Catalyzed Carboetherification of Alkenyl Oximes
作者:Lei Wang、Kenan Zhang、Yuzhuo Wang、Wenbo Li、Mingjie Chen、Junliang Zhang
DOI:10.1002/anie.201912408
日期:2020.3.9
highly efficient Pd/Xiang-Phos catalyzed enantioselective carboetherification of alkenyl oximes with either aryl or alkenyl halides, delivering various chiral 3,5-disubstituted and 3,5,5-trisubstituted isoxazolines in good yields with up to 97 % ee. The sterically bulky and electron-rich (S,Rs)-NMe-X2 ligand is responsible for the excellent reactivities and enantioselectivities. The salient features of this
此处报道的是高效率的Pd / Xiang-Phos催化的烯基肟与芳基或烯基卤化物的对映选择性碳醚化,可提供各种手性3,5-二取代和3,5,5-三取代的异恶唑啉,收率高达97% 。体积大且富含电子的(S,Rs)-NMe-X2配体负责出色的反应性和对映选择性。该转化的显着特征包括温和的反应条件,一般的底物范围,良好的官能团耐受性,良好的收率,高对映选择性,易于扩大规模以及在生物活性化合物的后期修饰中的应用。所获得的产物可以容易地转化为有用的手性1,3-氨基醇。