Scholarlink

<p>A novel deep eutectic solvent (Thr/Mal-DES) was synthesized by mixing one mole of L-threonine (Thr) with one mole of malonic acid (Mal) and was characterized by FT-IR, <sup>1</sup>H NMR, TGA/DTA, and densitometry techniques. Then, it was used as a highly effective catalyst for the rapid synthesis of chromeno[4,3-<i>d</i>]pyrimidines from the reaction of 4-hydroxy-coumarin, urea/thiourea and aldehyde under solvent-free conditions at 80&#xa0;°C in high yields and short reaction times.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Amino acid-based deep eutectic solvent as a versatile catalyst for the green synthesis of chromenopyrimidines

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月22日

查看全文
  • Afagh Ranjbaran,
  • Davood Habibi,
  • Arezo Monem,
  • Nastaran Dehnokhalaji

摘要

A novel deep eutectic solvent (Thr/Mal-DES) was synthesized by mixing one mole of L-threonine (Thr) with one mole of malonic acid (Mal) and was characterized by FT-IR, 1H NMR, TGA/DTA, and densitometry techniques. Then, it was used as a highly effective catalyst for the rapid synthesis of chromeno[4,3-d]pyrimidines from the reaction of 4-hydroxy-coumarin, urea/thiourea and aldehyde under solvent-free conditions at 80 °C in high yields and short reaction times.