《Introduction of a novel dicationic Bronsted acidic ionic liquid based on pyrazine and its application in the synthesis of xanthenediones and 3, 4-dihydropyrimidin-2(1H)-ones under solvent-free conditions》 was written by Sadati Sorkhi, Seyyed Erfan; Hashemi, Mohammad M.; Ezabadi, Ali. Category: alcohols-buliding-blocksThis research focused onxanthenedione preparation green chem; dimethyl cyclohexanedione aryl aldehyde cyclocondensation ionic liquid catalyst; pyrimidinone preparation green chem; aryl aldehyde ethyl acetoacetate urea cyclocondensation ionic liquid catalyst; pyrazine acidic ionic liquid preparation. The article conveys some information:
A novel dicationic Bronsted acidic ionic liquid based on pyrazine I has been prepared and characterized by FTIR, 1H NMR, 13C NMR, MS, thermal gravimetric and differential thermal gravimetric anal. and also Hammett acidity function. The prepared dicationic ionic liquid I is found to be an efficient and reusable catalyst for the synthesis of xanthenediones II (Ar = Ph, 2-bromophenyl, thiophen-2-yl, etc.) and 3,4-dihydropyrimidin-2(1H)-ones III (Ar1 = 3-chlorophenyl, thiophen-2-yl, 4-fluorophenyl, etc.) under solvent-free conditions. The merits of the developed procedure include novelty in terms of the ionic liquid, easy preparation of the ionic liquid, I easy workup, reusability of the catalyst, high yield, short reaction time and absence of toxic organic solvent.3-Hydroxybenzaldehyde(cas: 100-83-4Category: alcohols-buliding-blocks) was used in this study.
3-Hydroxybenzaldehyde(cas: 100-83-4) is used as an ionophore, during the development of an highly selective and sensitive PVC membrane sensor, which can be used as a Tb3+ ion selective electrode.Category: alcohols-buliding-blocks
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