Para‐Toluenesulfonic Acid‐Catalyzed Green Synthesis of Pyrazolo[1,5‐a]pyrimidines from 5‐Aminopyrazoles and Terminal Keto‐Alkynes. - Taj, Shaik; Potuganti, Gal Reddy; Indukuri, Divakar Reddy; Praveen Kumar, Niggula; Rahim, Abdul; Velma, Ganga Reddy; Bathini, Nagendra Babu; Kamal, Ahmed (European Journal of Organic Chemistry, 2025)