Asymmetric α-Allylation of Aldehydes with Alkynes by Integrating Chiral Hydridopalladium and Enamine Catalysis
作者:Yong-Liang Su、Lu-Lu Li、Xiao-Le Zhou、Zhen-Yao Dai、Pu-Sheng Wang、Liu-Zhu Gong
DOI:10.1021/acs.orglett.8b00740
日期:2018.4.20
A palladium-catalyzed asymmetric α-allylation of aldehydes with alkynes has been established by integrating the catalysis of enamine and chiral hydridopalladium complex that is reversibly formed from the oxidative addition of Pd(0) to chiral phosphoric acid. The ternary catalyst system, consisting of an achiral palladium complex, a primary amine, and a chiral phosphoric acid allows the reaction to
通过整合烯胺和手性氢化钯配合物的催化作用,建立了钯与炔烃的醛催化不对称α-烯丙基化反应,该催化作用是将Pd(0)氧化添加到手性磷酸中而可逆地形成的。由非手性钯配合物,伯胺和手性磷酸组成的三元催化剂体系使反应可耐受各种α,α-二取代的醛和炔烃,从而以高收率和优异的收率提供了相应的烯丙基化产物对映选择性水平。