Uncatalyzed one-pot pseudo-four-component reaction of ethyl pyruvate, anilines, and aldehydes in n-hexane as solvent, under reflux, affords a variety of 3-amino-1,5-dihydro-2H-pyrrol-2-ones in high yield. n-Hexane is an excellent driving force in preparation of the desired products. These compounds have biological and pharmacological properties and are also used in medicinal chemistry. Use of a non-toxic and inexpensive solvent, simple and efficient synthesis, clean work-up, and high yields of the products are the advantages of this method. We report the first catalyst-free method for synthesis this class of compounds.
丙酮酸乙酯、
苯胺和醛在
正己烷为溶剂、回流条件下进行非催化的单锅伪四组份反应,可高产多种 3-
氨基-1,5-二氢-
2H-吡咯-2-酮。这些化合物具有
生物和药理特性,也可用于药物
化学。使用无毒且廉价的溶剂、简单高效的合成、清洁的操作以及高产率是该方法的优点。我们报告了合成这类化合物的第一种无催化剂方法。