... of 2-picolilamine 4. So, those one-pot reactions were carried out in toluene using ultrasound irradiation for ... Ultrasonics synthesis of 2-aryl-3-(pyridin-2-ylmethyl)-1,3-thiazolidin-4-ones 6a–o. ... The reaction mixture was sonicated by an ultrasonic probe with a frequency of 20 kHz at ...
