Reaction of α-iminomethylene amino esters with mono- and bidentate nucleophiles: a straightforward route to 2-amino-1H-5-imidazolones
作者:Montserrat Heras、Montserrat Ventura、Anthony Linden、José M Villalgordo
DOI:10.1016/s0040-4020(01)00330-1
日期:2001.5
The reaction between α-iminomethylene amino esters with different mono- and bidentate nucleophiles has been studied. It has been shown that the reactions with primary and secondary amines as monodentate nucleophiles afford 2-aminoimidazolones efficiently under very mild conditions. Judicious selection of the primary amines employed can modulate the regioselectivity. Analogous reactions employing bidentate
已经研究了α-亚氨基亚甲基氨基酯与不同的单和二齿亲核试剂之间的反应。已经表明,与伯胺和仲胺作为单齿亲核试剂的反应在非常温和的条件下有效地提供了2-氨基咪唑啉酮。明智地选择所用的伯胺可以调节区域选择性。使用二齿亲核试剂(例如am)的类似反应也提供咪唑基衍生物。后者的形成优于三嗪酮类型的七元杂环的形成。本文所述溶液中的优化方法应易于适应于在固相中用于平行合成具有高度分子多样性的2-氨基咪唑酮衍生物的集合。