Synthesis and spectroscopic studies of some new oxazepine derivatives throughout [2+5] cycloaddition reactions (III)
作者:Alaa J. Mahrath、Saadon A. Aowda、Sabah N. Kamil
DOI:10.1007/s11164-012-0877-2
日期:2013.10
work included condensation reactions of o-tolidine with different aromatic aldehydes in absolute ethanol to give Schiff bases ( w 9 – w 12 ) in high yield which, on reaction with maleic and phthalic anhydride by [2+5] cycloaddition reactions in the presence of suitable solvents, give the corresponding [1,3]oxazepine-4,7-dione ( w 9 m – w 12 m ) and [1,3]oxazepine-1,5-dione ( w 9 ph – w 12 ph ), respectively
目前的工作包括邻甲苯胺与不同芳香醛在无水乙醇中的缩合反应,以高收率得到席夫碱( w 9 – w 12 ),该席夫碱 与马来酸酐和邻苯二甲酸酐在[2 + 5]环加成反应中存在合适的溶剂时,得到相应的[1,3]奥氮平-4,7-二酮( w 9 m – w 12 m )和[1,3]奥氮平-1,5-二酮( w 9 ph – w 12 ph) ), 分别。通过TLC监测新合成的化合物的结构,并基于元素分析,FT-IR和1 H NMR建立该结构。