Proline-based polymeric monoliths: Synthesis, characterization, and applications as organocatalysts in aldol reaction
作者:Dipti Garg、J.-H. Ahn、Ghanshyam S. Chauhan
DOI:10.1002/pola.23845
日期:2010.3.1
and nitrogen analysis and used as catalyst in aldol reactions. The swelling behavior of the monolith was also studied as function of various external parameters like pH and temperature. The monoliths synthesized with 1% crosslinker was selected as candidate monolith for use as catalyst in aldol reaction, which was studied as a function of time, temperature, substrate structure, and amount of water:EtOH
基于脯氨酸的聚合物整料是通过绿色协议使用脂肪酶催化的甲基丙烯酸和4-羟基脯氨酸的酯化反应合成的。将由此制备的甲基丙烯酸脯氨酯原位聚合为交联的整料。整料通过多种技术进行表征,例如傅立叶红外光谱,1 H-NMR,13C-NMR,扫描电子显微镜(SEM),X射线衍射(XRD)和氮分析,并用作醇醛反应中的催化剂。还研究了整料的溶胀行为,该溶胀行为是随各种外部参数(例如pH和温度)而变化的。选择由1%交联剂合成的整体材料作为在醇醛反应中用作催化剂的候选整体材料,研究该整体材料是时间,温度,底物结构和水:EtOH量的函数。催化剂在交联的醇醛缩合反应中表现出高效率,特别是在具有吸电子取代基的芳族底物的情况下,当研究多达五个循环的可循环性时,还观察到良好的活性保持性。©2010 Wiley Periodicals,Inc. J Polym Sci A部分:Polym Chem 48:1007–1015,2010年