作者:Karin Knobloch、Wolfgang Eberbach
DOI:10.1021/ol0056832
日期:2000.4.1
[formula: see text] Treatment of o-propargylaryl nitrones with base provided 1,2-dihydro[c]benzazepin-3-ones in good yields. The straightforward transformation is explained on the basis of a multistep rearrangement involving conjugated allene-nitrones as precursors of a 1,7-dipolar electrocyclization process that is followed by further bond reorganizations.
[式:见正文]用碱处理邻-炔丙基芳基硝酮可提供高产率的1,2-二氢[c]苯并ze庚因-3-酮。基于包括共轭亚丙基-硝酮作为1,7-偶极电环化过程的前体的多步重排,然后进行进一步的键重组,来解释直接转化。