ULTRASONICS SONOCHEMISTRY, cilt.21, sa.4, ss.1600-1607, 2014 (SCI-Expanded)
The Yb(OTf)(3) catalyzed formal aza-Diels-Alder (or Povarov) reaction of cyclopentadiene and 1,3-cyclohexadiene with in situ-generated N-arylimines under conventional/ultrasonic techniques is herein described. This kind of three-component Povarov reaction results in quinoline and phenanthridine derivatives, which are important biological compounds. (C) 2014 Elsevier B.V. All rights reserved.