Silica gel-supported tungstic acid (STA): A new, highly efficient and recyclable catalyst for the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione carbonitriles and carboxylates under neat conditions

M. Veeranaryana Reddy; P. Chenna Rohini Kumar; G. Chandra Sekhar Reddy; C. Suresh Reddy

Comptes Rendus. Chimie, Volume 17 (2014) no. 12 p. 1250-1256