1,3-Dipolar cycloaddition reaction of aryl nitrile oxides with alkenes using imidazole and pyridine containing reusable polymeric base catalysts
作者:Nilesh N. Korgavkar、Shriniwas D. Samant
DOI:10.1080/00397911.2017.1399207
日期:2018.2.16
electron microscopy (FE-SEM), and Brunauer-Emmett-Teller (BET) surface area analysis. Their swelling behavior was also studied. They were used as base catalysts for 1,3-dipolar cycloaddition reaction of aryl nitrile oxides, generated in situ from N-hydroxyimidoyl chloride, with N-phenylmaleimide and ethyl acrylate, to obtain 3-arylisoxazolines. Both the bases gave excellent results. These polymers
摘要 使用不同量的二乙烯基苯作为交联剂,通过自由基聚合由各自的乙烯基单体制备了交联聚-1-(4-乙烯基苄基)咪唑和交联聚-4-乙烯基吡啶。通过FT-IR、TGA、场发射扫描电子显微镜(FE-SEM)和Brunauer-Emmett-Teller (BET)表面积分析表征聚合物碱。还研究了它们的溶胀行为。它们被用作 1,3-偶极环加成反应的碱催化剂,芳基腈氧化物由 N-羟基亚氨酰氯原位生成,与 N-苯基马来酰亚胺和丙烯酸乙酯反应,得到 3-芳基异恶唑啉。两种碱基都得到了极好的结果。这些聚合物是可重复使用的、使用安全的,并且为吡啶和三乙胺等危险的有机不可重复使用的碱提供了良好的替代品。