Synthesis of 6-Amino-purine Derivatives Catalyzed by Polyethylene Glycol 1000-Dicationic Acidic Ionic Liquid
Lu Hongfei, Sun Leilei, Wu Dingming, Gao Yuhua, Shi Yali, Xue Qin
Chin. J. Org. Chem. . 2012, (10): 1880 -1887 .  DOI: 10.6023/cjoc1112303