“On water” synthesis of dibenzo-[1,4]-diazepin-1-ones using <scp>l</scp>-proline as an organocatalyst and under catalyst-free conditions, and their evaluation as α-glucosidase inhibitors
Functionalized dibenzo-[1,4]-diazepin-1-ones are synthesized using the “on-water” concept in the presence of l-proline (organocatalyst; 20 mol%) and under catalyst free conditions (sealed tube) in an aqueous medium.
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 asymmetricconstruction 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