Cycloaddition reactions of nitrosoalkenes, azoalkenes and nitrile oxides mediated by hydrotalcite
作者:Americo Lemos、João Paulo Lourenço
DOI:10.3998/ark.5550190.0011.515
日期:——
Mg:Al 3:1 hydrotalcite (Ht), used in catalytic quantities, promotes the generation of nitrosoalkenes, azoalkenes and nitrile oxides. These can be intercepted in situ by heterocycles and olefins in [4+2] and [3+2] cycloaddition reactions, producing dihydro-1,2-oxazines, tetrahydropyridazines and isoxazolines. The regeneration and reuse of Ht without loss of activity and the absence of organic solvent
Mg:Al 3:1 水滑石 (Ht) 以催化量使用,可促进亚硝基烯烃、偶氮烯烃和腈氧化物的生成。这些可以在 [4+2] 和 [3+2] 环加成反应中被杂环和烯烃原位拦截,产生二氢-1,2-恶嗪、四氢哒嗪和异恶唑啉。这种方法的主要优点是在不损失活性和不存在有机溶剂的情况下再生和再利用 Ht。