Highly efficient catalyst-free synthesis of isoindigo derivatives in ionic liquid as a reusable media

Subject Areas : Polymers and Organic Structures

Abbas Ali Esmaeili ¹ (Department of chemistry, Ferdowsi University of Mashhad, Mashhad, Iran)
Zohre Zeraatkar ² (Department of Chemistry, University of Birjand, Birjand, Iran)
Azizollah Habibi ³ (Faculty of Chemistry, Kharazmi University, Karaj. Iran)

Received: 2023-06-01 Accepted : 2023-06-24 Published : 2023-08-23

Keywords: Recyclable media, "Catalyst-free", "1-Benzyl-3-methyl imidazolium chloride", "Isoindigo",

Abstract :

A simple, efficient, and green method for synthesis of isoindigos by reaction of oxindoles, and isatins under conventional heating using 1-benzyl-3-methylimidazolium Chloride, [Bnmim]Cl, as a neutral, effective and reusable media is described. This method has several advantages, for example simple procedure with an easy workup, shorter reaction times, and excellent yields without any byproduct. 

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Highly efficient catalyst-free synthesis of isoindigo derivatives in ionic liquid as a reusable media