2-Aminoethanesulfonic acid: An efficient organocatalyst for green synthesis of spirooxindole dihydroquinazolinones and novel 1,2-(dihydroquinazolin-3(4<i>H</i>)isonicotinamides in water
作者:Asha V. Chate、Priyanka P. Rudrawar、Giribala M. Bondle、Jaiprakash N. Sangeshetti
DOI:10.1080/00397911.2019.1692868
日期:2020.1.17
friendliness, good yields, and convenient operation. The reaction proceeds efficiently using water as green solvent and nontoxic catalysts that could be efficiently reused. Together with this simple workup procedure, use of the organocatalyst, and water as solvent without the need of column chromatographic purification, are the notable features of this methodology, which make this protocol a very efficient
摘要 一种简便高效的一锅法制备螺吲哚二氢喹唑啉酮衍生物和新型 N-(4-oxo-2-phenyl-1,2-dihydroquinazolin-3(4H)-yl) 异烟酰胺的方法描述了由 2-氨基乙磺酸(牛磺酸)催化的取代醛。该新方案具有环境友好、收率好、操作方便等优点。该反应使用水作为绿色溶剂和可以有效重复使用的无毒催化剂有效地进行。连同这个简单的后处理程序,使用有机催化剂和水作为溶剂而不需要柱色谱纯化,是这种方法的显着特点,这使得该协议成为传统方法的一种非常有效和绿色的替代方案。