Natural phosphate-supported Cu(ii), an efficient and recyclable catalyst for the synthesis of xanthene and 1,4-disubstituted-1,2,3-triazole derivatives

Abstract

Cu(NO3)2 supported on natural phosphate, Cu(ii)/NP, was prepared by co-precipitation and characterized. The Cu(ii)/NP catalyzed the synthesis of xanthenes and triazoles. The proposed protocols provided significant economic and environmental advantages.

Introduction of a trinuclear manganese(iii) catalyst on the surface of magnetic cellulose as an eco-benign, efficient and reusable novel heterogeneous catalyst for the multi-component synthesis of new derivatives of xanthene

“…To stable, the more greenness of the current catalyst over the reported catalysts in the one-pot threecomponent reaction of benzaldehyde, dimedone, the current catalyst's green metrics was compared with those of two previously reported catalysts ( Table 5, entries 1 and 8). 56,70 As can be perceived from the results in Fig. 13a and b (see ESI †), the higher the AEF, CE, and RME factors and the lower the PMI, E, SI, and WI factors of Fe 3 O 4 @NFC@NNSM-Mn(III) compared with those of NP and [SO 3 H-Pyrazine-SO 3 H]Cl 2 , acknowledged that the Fe 3 O 4 @NFC@NNSM-Mn(III) is a greener and more supportable catalyst for such an Multi-component reaction (see ESI † for detailed calculations).…”

Organoid Technology: Current Standing and Future Perspectives

“…Nonprotein natural biopolymers such as hyaluronic acid could be enzymatically degraded by the produced enzymes from cells 66,67 . On the other hand, cell‐independent material degradation could occur via the enzymatic degradation of chemical and physical bonds within the material.…”

Natural vs. Synthetic Phosphate as Efficient Heterogeneous Compounds for Synthesis of Quinoxalines

“…In parallel, mineralogical classes of natural phosphate (NP), which generally belong to the family of phosphocalcic apatites (Ca 10 (PO 4 ) 6 X 2 , X=OH and F), can be exploited to acquire hydroxyl and fluorapatite in their pure state [7][8][9]. Natural phosphate (apatite) and synthetic fluorapatite phosphate have been used [8,10] as the catalysts for Claisen-Schmidt condensation [11], the hydration of nitriles [12] and the oxidation of cyclic ketones to keto acids [13], tetraketones [14], xanthenes [14,15] and 1,4-disubstituted-1,2,3-triazoles [15]. In the present study, the main components of the newly used NP are investigated and its catalytic effects for the synthesis of quinoxaline are assayed.…”