Suga Hiroyuki, Funyu Akira, Kakehi Akikazu
Department of Chemistry and Material Engineering, Faculty of Engineering, Shinshu University, Wakasato, Nagano 380-8553, Japan.
Org Lett. 2007 Jan 4;9(1):97-100. doi: 10.1021/ol062675y.
[reaction: see text] We have found the first example of high levels of asymmetric induction (97-74% ee) along with high diastereoselectivity (>99:1-64:36) in dipole-HOMO-/dipolarophile-LUMO-controlled asymmetric 1,3-dipolar cycloaddition reactions between fused azomethine imines and 3-acryloyl-2-oxazolidinone using a chiral BINIM-Ni(II) complex as a chiral Lewis acid catalyst.
[反应:见正文] 我们发现了首例在使用手性BINIM-Ni(II)配合物作为手性路易斯酸催化剂的情况下,稠合甲亚胺亚胺与3-丙烯酰基-2-恶唑烷酮之间的偶极-HOMO-/亲偶极体-LUMO控制的不对称1,3-偶极环加成反应中,实现了高水平的不对称诱导(对映体过量率为97 - 74%)以及高非对映选择性(>99:1 - 64:36)。