Development of Axially Chiral Cyclo-Biaryldiol Ligands with Adjustable Dihedral Angles
作者:Pengxiang Zhang、Jipan Yu、Fei Peng、Xudong Wu、Jiyang Jie、Can Liu、Hua Tian、Haijun Yang、Hua Fu
DOI:10.1002/chem.201603706
日期:2016.11.21
A new type of axially chiral cyclo‐[1,1′‐biphenyl]‐2,2′‐diol (CYCNOL) ligands with adjustable dihedral angles have been developed by varying the bridge chain length. Eight‐, nine‐ and ten‐membered cyclo‐ligands were prepared and evaluated by using two representative examples: enantioselectiveadditions of diethylzinc to aldehydes and organometallic reagents to enones. The results revealed that the