Preparation of imidazolium ionic liquids and their catalytic activity in the synthesis of β-enaminones was written by Yin, Wanxiang;Li, Runsheng;Long, Yulin;Li, Ming;Yang, Jun. And the article was included in Jinan Daxue Xuebao, Ziran Kexue Yu Yixueban in 2010.Recommanded Product: 478935-29-4 The following contents are mentioned in the article:
A series of imidazolium ionic liquids ([Hmim]+) with different anions were prepared and the catalytic performance of these catalysts for the synthesis of β-enaminones were investigated. The results showed that these [Hmim]+-type ionic liquids exhibited excellent activity; [Hmim]BF4 had the best catalytic performance and had a yield of 96% after 10 min. [Hmim]BF4 as a catalyst has been used for the synthesis of different β-enaminones and most of the reactions can proceed smoothly. [Hmim]BF4 was reused five times without considerable loss of activity and had a yield of 89% after 10 min reaction. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4Recommanded Product: 478935-29-4).
1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Recommanded Product: 478935-29-4
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem