Sulfamic acid as energy efficient catalyst for synthesis of flurophores, 1-𝐻-spiro [isoindoline-1,2′-quinazoline]-3,4′(3′𝐻)-diones

Journal of Chemical Sciences

Dattaprasad M Pore1¹  Mansing M Mane¹ 

[1] Department of Chemistry, Shivaji University, Kolhapur 416 004, India$$

关键词: Cyclo-condensation;    energy efficient synthesis;    fluorescence spectroscopy;    spiro compounds.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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-𝐻-spiro[isoindoline-1,2′-quinazoline]-3,4′(3′𝐻)-diones were found to be fluorescent with absorption in UV region (302, 362 nm) and emission in visible region (413-436 nm) with Stokes shift of 44-72 nm.

【 授权许可】

Unknown