作者:Ashraf A. Aly、Nasr K. Mohamed、Alaa A. Hassan、Aboul-Fetouh E. Mourad
DOI:10.1246/bcsj.69.2249
日期:1996.8
3,4,5,6-Tetrachloro-1,2-benzoquinone (o-CHL) reacted with N,N′-dicyclohexyl-1,2-ethanediimine 1a to give a transient condensation product, which underwent [4 + 2]cycloaddition reaction with another molecule of 1a. In a different manner, utilizing N,N′ -diaryl-1,2-ethanediimines 1b,c as a dienophile led to an initial production of substituted o-CHL, followed by a [4 + 2]cycloaddition reaction with another molecule of 1b,c. A similar behavior was observed on the reaction of N,N′-di(alkyl/aryl)-p-xylenediimines 1a—f with the same acceptor.
3,4,5,6-四氯-1,2-苯醌(o-CHL)与N,N'-二环己基-1,2-乙二亚胺1a反应,形成了一种短暂的缩合产物,随后与另一分子1a发生[4 + 2]环加成反应。另一方面,利用N,N'-二芳基-1,2-乙二亚胺1b,c作为双烯亲和体,首先生成取代的o-CHL,然后与另一分子1b,c进行[4 + 2]环加成反应。在N,N'-二(烷基/芳基)-对-二亚苯1a—f与同一受体的反应中,观察到了类似的行为。