Yb(OTf) 3 Catalyzed Knoevenagel Reaction of Me-thylene Compounds with Aldehydes under Solvent-free Condition
WANG Li-Min*,SHENG Jia,ZHANG Liang
HAN Jian-Wei,FAN Zhao-Yu,TIAN He
Chin. J. Org. Chem. . 2005, (08): 964 -968 .