Asymmetric Pinacol Coupling of Aromatic Aldehydes Mediated by Chiral Squaric Acid Amidoalcohol-Titanium Complexes
CHENG Qing-Fang* ,a,b,XU Xing-You,b,XU Tong-Tao b
ZHANG Xiang-Tao a,BAO Jing-Yan a
Chin. J. Org. Chem. . 2006, (11): 1544 -1547 .