Effect of Chiral Diene Ligands in Rhodium-Catalyzed Asymmetric Addition of Arylboronic Acids to α,β-Unsaturated Sulfonyl Compounds
作者:Takahiro Nishimura、Yuka Takiguchi、Tamio Hayashi
DOI:10.1021/ja303109q
日期:2012.6.6
Asymmetric addition of arylboronic acids to α,β-unsaturated sulfonyl compounds proceeded in the presence of a rhodium catalyst coordinated with a chiral diene ligand to give high yields of the addition products with high enantioselectivity (96->99.5% ee). The diene ligand was proved to be essential for the formation of the addition products, while the use of a bisphosphine ligand mainly gave the cine-substitution
在与手性二烯配体配位的铑催化剂存在下,芳基硼酸与 α,β-不饱和磺酰基化合物的不对称加成反应以高对映选择性 (96->99.5% ee) 得到高收率的加成产物。证明二烯配体对于加成产物的形成是必不可少的,而双膦配体的使用主要产生电影取代产物。