Copper(<scp>i</scp>) catalyzed diastereoselective multicomponent synthesis of spiroindolo-pyrrolidines/-imidazolidines/-triazolidines from diazoamides via azomethine ylides
作者:Sengodagounder Muthusamy、Singaravelan Ganesh Kumar
DOI:10.1039/c5ob02322j
日期:——
of regio-, chemo- and diastereoselective studies on three- as well as four-component reactions using diazooxindoles, imines, aldehydes, amines, alkenes, alkynes or diazenes in the presence of copper(I) thiophene-2-carboxylate are performed to furnish spiroindolo-pyrrolidine/-imidazolidine/-triazolidine ring systems in good yields. A mixture of products was obtained when unsymmetrical alkenes were used
在重氮,噻吩,亚胺,亚胺,烯,炔或二氮烯存在下,在铜(I)噻吩-2-羧酸铜存在下,对三组分和四组分反应进行区域,化学和非对映选择性研究以良好的产率提供螺吡咯并-吡咯烷/-咪唑烷/-三唑烷环系统。当使用不对称烯烃作为亲极性化合物时,获得了产物的混合物。这项研究证明了由铜(I)类胡萝卜素成功生成了分子间的甲亚胺基化物,以及它们随后与各种双极性亲和剂(例如烯烃(CC ),亚胺(CN),二氮杂(N)的1,3-偶极环加成反应)。N)以立体选择的方式。进行了单晶X射线分析,以明确确定螺杂环环系统的结构和立体化学。