1242078-10-9Relevant articles and documents
ZrOCl2?8H2O as an efficient catalyst for the pseudo four-component synthesis of benzopyranopyrimidines
Tavakoli, Hamid Reza,Moosavi, Sayed Mojtaba,Bazgir, Ayoob
, p. 260 - 263 (2013/07/26)
An efficient and environmentally benign protocol for the pseudo four-component synthesis of benzopyranopyrimidines via condensation of salicylic aldehydes, malononitrile and various amines catalyzed by ZrOCl2?8H2O as an inexpensive and eco-friendly catalyst with high catalytic activity under solvent-free conditions is reported. This protocol provides a new and improved method for obtaining benzopyranopyrimidines in terms of good yields, simple experimental procedure and short reaction time.