Enantioselective synthesis of β-lactams via the IndaBox–Cu(II)-catalyzed Kinugasa reaction
作者:Takao Saito、Tomohiro Kikuchi、Hiroaki Tanabe、Junichi Yahiro、Takashi Otani
DOI:10.1016/j.tetlet.2009.06.050
日期:2009.9
The enantioselective Kinugasa reaction of nitrones with terminal alkynes in the presence of 20 mol % of IndaBox–Cu(OTf)2 and di-sec-butylamine (1.5 equiv) produced β-lactams with the highest level of enantiomeric excesses among the catalytic enantioselective Kinugasa reactions reported so far.
在20 mol%IndaBox–Cu(OTf)2和二仲丁胺(1.5当量)的存在下,硝酮与末端炔烃的对映选择性Kinugasa反应生成的β-内酰胺在催化对映选择性Kinugasa中具有最高的对映体过量水平迄今已报道了反应。