作者:Chenguang Yu、Yianan Zhang、Shilei Zhang、Hao Li、Wei Wang
DOI:10.1039/c0cc03186k
日期:——
A novel and synthetically efficient Cu(II) catalyzed oxidation-dipolar cycloaddition-aromatization cascade reaction has been developed for a "one-pot" synthesis of biologically important pyrrolo [2, 1-a] isoquinolines.
Synthesis of 3,4-dihydropyrrolo[2,1-a]isoquinolines based on [3+2] cycloaddition initiated by Rh2(cap)4-catalyzed oxidation
作者:Hong-Tu Wang、Chong-Dao Lu
DOI:10.1016/j.tetlet.2013.04.004
日期:2013.6
Azomethine ylides have been efficiently generated via Rh2(cap)4-catalyzed oxidation of tetrahydroisoquinoline derivatives in the presence of base. The ylides are trapped in situ via [3+2] cycloaddition with dipolarophiles and subjected to oxidativearomatization facilitated by N-bromosuccinimide to provide 3,4-dihydropyrrolo[2,1-a]isoquinoline derivatives in moderate to excellent yields.
在碱的存在下,通过Rh 2(cap)4催化的四氢异喹啉衍生物的氧化反应,可以高效地生成甲亚胺基化物。经由二极性亲和剂经[3 + 2]环加成法将其原位捕获,并通过N-溴代琥珀酰亚胺促进氧化芳构化,从而以中等至极好的收率提供3,4-二氢吡咯并[2,1- a ]异喹啉衍生物。