Sulfamic acid as energy efficient catalyst for synthesis of flurophores, 1-H-spiro [isoindoline-1,2′-quinazoline]-3,4′(3′H)-diones
作者:MANSING M MANE、DATTAPRASAD M PORE
DOI:10.1007/s12039-016-1047-7
日期:2016.4
An energy efficient synthesis of 1-H-spiro[isoindoline-1,2 ′-quinazoline]-3,4 ′(3 ′ H)-diones has been expediently accomplished by a reaction of isatin(s) / cyclic ketone and anthranilamide in ethanol at ambient temprature. Excellent yields of the products in short time duration, operational simplicity, and simple work-up procedure are the attractive features of the present protocol. Synthesized 1
1-一种能量高效合成ħ -螺[异二氢吲哚-1,2- ' -喹唑啉] -3,4- ' (3 ' ħ) -二酮已有利地通过靛红的反应来实现(一个或多个)/环酮和邻氨基苯甲酰胺在在环境温度下使用乙醇。在本发明方案中,在短时间内,操作简单和简单的后处理过程中产品的优异产率是有吸引力的。合成的1- ħ -螺[异二氢吲哚-1,2- ' -喹唑啉] -3,4- ' (3 ' ħ被发现) -二酮为荧光与在UV区吸收(302,362纳米)和发射在可见光区域( 413-436 nm),斯托克斯位移为44-72 nm。 1 - H-螺[异吲哚啉-1,2'-喹唑啉] -3,4'(3'H)-二酮的合成