Organic chemistry
The green synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives catalyzed by acidic ionic liquid under ultrasound irradiation

Esmayeel Abbaspour-Gilandeh; Seyyedeh Cobra Azimi

Volume 3, Issue 3, pp. 180-282,Serial No. 8 , July 2015, , Pages 218-231

Abstract
  Abstract-A novel and efficient method has been developed for the synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives by the convenient ultrasound-mediated condensation of 4-hydroxyquinolin-2-one with Meldrum’s acid and aldehydes in the presence of a catalytic amount of [HMIm]HSO4 as a green, ...  Read More

The green synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives catalyzed by acidic ionic liquid under ultrasound irradiation