Axially chiral phosphine–oxazoline ligands in silver(I)-catalyzed asymmetric Mannich reaction of N-Boc aldimines with trimethylsiloxyfuran
作者:Qian-Yi Zhao、Min Shi
DOI:10.1016/j.tet.2011.03.046
日期:2011.5
Axially chiral phosphine–oxazoline ligand L6 was found to be a fairly effective chiral ligand in silver(I)-catalyzed asymmetric Mannich reaction of N-Boc aldimines with trimethylsiloxyfuran to give the corresponding adducts in up to 97% yield, 7:1 dr and 86% ee (major diastereoisomer).
发现轴向手性膦-恶唑啉配体L6是银(I)催化的N -Boc Aldimines与三甲基甲硅烷氧基呋喃的不对称曼尼希反应中的相当有效的手性配体,以高达97%的产率,7:1 dr和7:1的摩尔比得到相应的加合物。 ee(主要非对映异构体)86%。