Ruthenium-Catalyzed [3 + 2] Cycloaddition of 2<i>H</i>-Azirines with Alkynes: Access to Polysubstituted Pyrroles
作者:Tengfei Li、Hao Yan、Xincheng Li、Chunxiang Wang、Boshun Wan
DOI:10.1021/acs.joc.6b02322
日期:2016.12.2
A ruthenium-catalyzed intermolecular [3 + 2] cycloaddition of 2H-azirines and activated alkynes is reported, which provides polysubstituted pyrroles in moderate to good yields. This approach features a C–N bond cleavage of 2H-azirines by a ruthenium catalyst. The results of this study would provide a complementary method to synthesize polysubstituted pyrroles from the known 2H-azirine approaches and
Rh-Catalyzed Conversion of 3-Diazoindolin-2-imines to 5<i>H</i>-Pyrazino[2,3-<i>b</i>]indoles with Photoluminescent Properties
作者:Hualong Ding、Zaibin Wang、Songlin Bai、Ping Lu、Yanguang Wang
DOI:10.1021/acs.orglett.7b03211
日期:2017.12.15
A rhodium-catalyzed reaction between 3-diazoindolin-2-imines and 2H-azirines, followed by treatment with a base, furnishes 5H-pyrazino[2,3-b]indoles in excellent yields. A number of functional groups tolerate the reaction conditions, and the resulting 5H-pyrazino[2,3-b]indoles present strong photoluminecence in solutions, powders, and films.