Basic Ionic Liquid as Catalyst for the Efficient and Green Synthesis of 2-Amino-3-nitrobenzonitriles in Ethanol
作者:Zhiwei Chen、Kai Ding、Weike Su
DOI:10.1080/00397911.2010.486503
日期:2011.4.19
[image omitted] A basic ionic liquid, [BmIm]OH was used as catalyst in the cyclocondensation of various kinds of vinylmalononitriles with nitroolefins in ethanol at reflux. A series of 2-amino-3-nitrobenzonitriles were obtained in reasonable yields. The straightforward and green protocol was found to be fairly efficient, and the catalyst could be recycled and reused in subsequent reactions with consistent activity. The mechanism of the reaction was discussed.
DABCO-promoted one-pot synthesis of heteroaryl-substituted benzenes and their biological evaluation
A simple and efficient one-pot synthesis of heteroaryl-substituted benzenes has been developed via cyclocondensation of vinylmalononitriles and ethylvinylcyanoacetates with heteroarylnitroolefines using diazabicyclo[2,2,2]octane as catalyst. The titled compounds were evaluated for their antitubercular, antibacterial and antifungal activities at various concentrations.