Enantioselective Construction of the Biologically Significant Dibenzo[1,4]diazepine Scaffold<i>via</i>Organocatalytic Asymmetric Three-Component Reactions
作者:Yang Wang、Man-Su Tu、Feng Shi、Shu-Jiang Tu
DOI:10.1002/adsc.201400095
日期:2014.6.16
The first catalytic asymmetric construction of the biologically important dibenzo[1,4]diazepine scaffold has been established via SPINOL‐derived chiral phosphoric acid‐catalyzed three‐component reactions of aldehydes, 1,2‐phenylenediamines and cyclohexane‐1,3‐diones, which afforded structurally complex and diverse dibenzo[1,4]diazepines in high yields and good enantioselectivities (up to 98% yield, 92:8
通过SPINOL衍生的手性磷酸催化的醛,1,2-苯二胺和环己烷-1,3-二酮的三组分反应,建立了生物学上重要的二苯并[1,4]二氮杂dio骨架的第一个催化不对称结构。从而以高收率和良好的对映选择性(高达98%的收率,92:8 er)提供结构复杂和多样的二苯并[1,4]二氮杂s。这种转变也代表了该三组分反应的第一个催化不对称形式,并提供了易于进入结构刚性的七元手性杂环的途径。