describe a hybrid system that realizes cooperativity between an organophotoredox acridinium catalyst and a chiral chromium complex catalyst, thereby enabling unprecedented exploitation of unactivated hydrocarbon alkenes as precursors to chiral allylchromium nucleophiles for asymmetric allylation of aldehydes. The reaction proceeds under visible light irradiation at room temperature, affording the corresponding
我们描述了一种混合系统,该系统实现了有机光氧化还原
吖啶鎓催化剂和手性
铬配合物催化剂之间的协同作用,从而能够前所未有地利用未活化的烃烯烃作为手性烯丙基
铬亲核试剂的前体,用于醛的不对称烯丙基化。该反应在室温下、可见光照射下进行,得到相应的高
烯丙醇,其非对映异构体比例>20/1,ee高达99%。Mg(ClO 4 ) 2的添加显着增强了反应活性和对映选择性。