Saccharin based ionic liquid: Novel and recyclable catalyst for eco-friendly mechanosynthesis of Biginelli and Hantzcsh heterocycles under solvent-free conditions
作者:Behjat Pouramiri、Khadijeh Rabiei、Mohammad Hadi Meshkatalsadat、Mohsen Rashidi
DOI:10.1016/j.molstruc.2023.136013
日期:2023.11
1-dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)acetate ([Sac-CH3CO2][Et3NH]) ionic liquid catalyst under neat ball-milling conditions. In all the reactions, the target products were cleanly obtained in high yields without performing any column chromatography. This mechanosynthesis features environmentally benign, short reaction time, efficiency, the feasibility of the large-scale synthesis, and ambient temperature
设计、合成、表征了一种新型 1,2-苯并异噻唑-3(2 H )-一-1,1-二氧化物(糖精)基功能离子液体,并成功用作合成 Biginelli 和 Hantzcsh 杂环的可回收催化剂在室温下。这种绿色、无溶剂、操作简单、高效的策略用于组装各种含氮杂环化合物,包括二氢嘧啶 (4)、四氢喹唑啉 (6)、六氢吖啶 (8) 和噻二唑并[3,2-a ]嘧啶(12) 是在 2-(1,1-二氧化-3-氧代苯并[ d ]异噻唑-2(3H)-基)乙酸三乙铵 ([S ac -CH 3 CO 2 ][Et 3NH])离子液体催化剂在纯球磨条件下。在所有反应中,无需进行任何柱色谱,即可以高收率干净地获得目标产物。与经典反应相比,这种机械合成具有环境友好、反应时间短、效率高、大规模合成的可行性和环境温度等特点。