Synthesis of 3,4-Dihydropyrimidine-2(1H)-one Derivatives Using Phosphotungstic Acid Supported on Silica as Catalyst
XU Yulin, GONG Wenpeng, YANG Shuijin*
Chinese Journal of Applied Chemistry . 2014, (10): 1203 -1209 .  DOI: 10.3724/SP.J.1095.2014.40046