title: Organocatalyzed aerobic oxidative Robinson-type annulation of 2-isocyanochalcones: expedient synthesis of phenanthridines.
abstract: A DBU-catalyzed aerobic oxidative Robinson annulation of 2-isocyanochalcones with active methylene ketones was developed for the expedient synthesis of phenanthridines in high to excellent yields. This unprecedented multistep domino reaction represents a new strategy for the construction of this tricyclic scaffold by the sequential formation of two rings and three C-C bonds in a single operation at room temperature.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China. xuxx677@sdnu.edu.cn.
authors.forename: Zhongyan
authors.initials: Z
authors.lastname: Hu
authors.forename: Jinhuan
authors.initials: J
authors.lastname: Dong
authors.forename: Yang
authors.initials: Y
authors.lastname: Men
authors.forename: Yifei
authors.initials: Y
authors.lastname: Li
authors.forename: Xianxiu
authors.initials: X
authors.lastname: Xu