chromanones with multiple vicinal stereogenic centers has been realized for the first time, through the tandem reaction between 2-fluorinated 1-(2-hydroxyaryl)-1,3-diketones and α,β-unsaturated aldehydes. In the presence of chiral amine, the organo-tandem reaction including catalytic Michael addition/cycloketalization/hemiacetalization and acylation sequence provided a wide range of fluorinated tricyclic
通过2-
氟化的1-(2-羟基芳基)-1,3-二酮与α,β-不饱和
醛类的串联反应,首次实现了具有多个邻位立体中心的
氟化
三环苯并二氢
吡喃酮的对映选择性合成。在手性胺的存在下,包括催化迈克尔加成/环
缩酮化/
半缩醛化和酰化序列在内的有机串联反应提供了范围广泛的
氟化
三环苯并二氢
呋喃酮,具有优异的结果(> 30实例,高达> 99%ee和> 19:1博士)。还为该串联反应提供了合理的催化循环和过渡态,以使观察到的不对称诱导感合理化。