Title of article :
A novel and environment-friendly method for preparing dihydropyrano[2,3-c]pyrazoles in water under ultrasound irradiation
Author/Authors :
Zou، نويسنده , , Yi and Wu، نويسنده , , Hui and Hu، نويسنده , , Yu and Liu، نويسنده , , Hai and Zhao، نويسنده , , Xuan and Ji، نويسنده , , Honglou and Shi، نويسنده , , Daqing، نويسنده ,
Abstract :
A green and convenient approach to the synthesis of dihydropyrano[2,3-c]pyrazoles via four-component reaction of aromatic aldehydes, hydrazine, ethyl acetoacetate and malononitrile in water under ultrasound irradiation is described. This method provides several advantages such as environmental friendliness, shorter reaction time, excellent yields, and simple workup procedure.
Keywords :
Multi-component reactions , Ultrasound irradiation , Synthesis , 3-c]pyrazoles , green chemistry
Journal title :
Astroparticle Physics
