Zirconium-Mediated Multicomponent Reactions of 1,3-Butadiynes with Ylidenemalononitriles to Form Functionalized 1,8-Naphthyridine and Cyclopenta[<i>b</i>]pyridine Derivatives
作者:Shasha Yu、Renhong Sun、Haoyi Chen、Xin Xie、Yuanhong Liu
DOI:10.1002/chem.201405899
日期:2015.1.19
Zirconocene‐mediated multicomponent reactions of 1,3‐butadiynes with ylidenemalononitriles in the absence or presence of CuCl have been developed. In the absence of CuCl, 1,3‐butadiyne couples with three molecules of ylidenemalononitriles to yield azazirconacycles bearing a hexahydro‐1,8‐naphthyridine skeleton with high stereoselectivity. In the presence of CuCl, cyclopenta[b]pyridine or cyclopenta[b]quinolin‐1‐one
在不存在或存在CuCl的情况下,已开发出由茂茂锆介导的1,3-丁二炔与亚甲基丙二腈的多组分反应。在没有CuCl的情况下,1,3-丁二炔与三个分子的亚甲基丙二腈偶合,生成具有六氢-1,8-萘啶骨架且具有高立体选择性的氮杂碳杂环。在氯化亚铜,环戊二烯并[存在b ]吡啶或环戊二烯并[ b ]喹啉-1-酮衍生物通过Zr中的转移金属化获得 C键与Cu C键作为键反应步骤。这些多米诺型反应继续进行具有高化学-选择性,区域选择性和/或立体选择性,并允许多个C形成 N和C C键在单个操作中。