L-Proline/K2CO3-Catalyzed Eco-friendly Synthesis of Novel 2-(1H-Indol-3-yl)-3-phenyl-2,3-dihydroquinazolin-4(1H)-one Derivatives
作者:V. Hari Krishna Reddy、G. Prashanth Reddy、T. Krishna Mohan、A. Venkateswara Rao
DOI:10.1134/s1070428021100171
日期:2021.10
Abstract A green and eco-friendly synthesis of novel 2-(1H-indol-3-yl)-3-phenyl-2,3-dihydroquinazolin-4(1H)-one derivatives have been developed using L-proline as a simple catalyst. Two efficient methods have been described for the synthesis of dihydroquinazolin-4(1H)-one derivatives. In the first method, 1H-1,3-benzoxazine-2,4-dione reacted with substituted anilines and 1H-indole-3-carbaldehydes
摘要 使用 L-脯氨酸作为简单的2-(1 H -indol-3-yl)-3-phenyl-2,3-dihydroquinazolin-4(1 H )-one 衍生物的绿色环保合成催化剂。已描述了用于合成二氢喹唑啉-4(1 H )-one 衍生物的两种有效方法。在第一种方法中,1 H -1,3-苯并恶嗪-2,4-二酮在 L-脯氨酸作为催化剂的情况下,在水中与取代苯胺和 1 H-吲哚-3-甲醛反应,而在第二种方法中,使用 1 H -indol-3-ylmethanol 代替 indole-3-carbaldehyde的类似反应由 L-脯氨酸/K 2 CO 3催化室温下 30 分钟,得到相同的产物。这两个协议涉及环保和廉价的催化剂,以优异的收率和足够的纯度生产目标产品,因此不需要柱层析进行分离或纯化。