N. G. Khaligh, S. B. A. Hamid
Mar 24, 2015
Citations
0
Influential Citations
10
Citations
Journal
Chinese Journal of Catalysis
Abstract
Abstract 4-(Succinimido)-1-butane sulfonic acid was shown to be an efficient and reusable Bronsted acid catalyst for the synthesis of pyrano[4,3- b ]pyran derivatives using thermal and ultrasonic conditions. The catalyst was prepared by mixing succinimide and 1,4-butanesultone, which is simpler and safer than the preparation of succinimide sulfonic acid. This method has the advantages of high yield, clean reaction, simple methodology, and short reaction time. The catalyst can be recycled without loss of activity.