One stone three birds: Ni-catalyzed asymmetric allenylic substitution of allenic ethers, hydroalkylation of 1,3-enynes and double alkylation of enynyl ethers
作者:Zhirong Yang、Shan Wang、Ming Jiang、Gengchen Li、Long Li、Fangzhi Peng、Zhihui Shao
DOI:10.1016/j.cclet.2024.109518
日期:2024.1
asymmetric catalysis. Herein we demonstrate that a chiral Ni/P-Phos catalyst achieves three types of asymmetric reactions: allenylic substitution of racemic allenic ethers, 1,4-hydroalkylation of prochiral 1,3-enynes and double alkylation of newly designed enynyl ether reagents. Three methods complement each other and produce various axially chiral allene derivatives bearing a pyrazolidine-3,5-dione
开发低成本、资源丰富、环境友好的过渡金属催化剂,能够催化多种不同类型的不对称反应,是现代不对称催化的一个重要目标。在此,我们证明了手性Ni/P-Phos催化剂实现了三种类型的不对称反应:外消旋联烯醚的联烯取代、前手性1,3-烯炔的1,4-加氢烷基化和新设计的烯炔醚试剂的双烷基化。三种方法相互补充,产生各种带有吡唑烷-3,5-二酮单元的轴向手性丙二烯衍生物,其广泛存在于药物和具有多种药理活性的生物活性分子中。