Direct CuO nanoparticle-catalyzed synthesis of poly-substituted furans via oxidative C–H/C–H functionalization in aqueous medium

Abstract

Here, we have reported CuO nanoparticles catalyzed synthesis of poly-functionalized furan derivatives via direct functionalization of α,β-unsaturated carbonyl compounds through conjugate addition initiated domino reactions in aqueous ethanol.

On Water Cu@g‐C3N4 Catalyzed Synthesis of NH‐1,2,3‐Triazoles via [2+3] Cycloadditions of Nitroolefins/Alkynes and Sodium Azide

“…[73] However, to the best of our knowledge, g-C 3 N 4 supported copper chloride (Cu@g-C 3 N 4 ) material has not been reported in the literature. As a part of continuous interest in the development of heterogeneous synthetic methodologies using nanomaterials, [88][89][90][91][92][93] here, we have developed Cu@g-C 3 N 4 for the [3 + 2]cycloaddition of nitroolefins/alkynes with sodium azide leading to NH-1,2,3triazoles (Scheme 1).…”

Improvement of the selectivity to aniline in benzene amination over Cu/TS-1 by potassium

“…suggesting that there was no crystal phase of CuO and the copper was well dispersed. 39 Aer four times run, the peak positions were not changed, which showed good structure stability of TS-1.…”

Highly Efficient and Chemoselective Reduction of Nitroarenes Using Hybrid Ni@g‐C3N4 as Reusable Catalyst

“…For example, Fe‐g‐C 3 N 4 /BiVO 4 ‐g‐C 3 N 4 /Pd‐g‐C 3 N 4 /VO‐g‐C 3 N 4 have been developed mainly for photo‐oxidation reactions and Sonogashira coupling reaction. Very recently, as a part of interest in the developing heterogeneous nano‐catalysts, recently, we have reported fabrication of Cu@g‐C 3 N 4 for [3+2] cycloaddition of nitroolefins/alkynes with sodium azide leading to NH ‐1,2,3‐triazoles …”

“…For example, Fe-g-C 3 N 4 [9,[10][11][12][13] /BiVO 4 -g-C 3 N 4 [14] /Pd-g-C 3 N 4 [1,7] /VO-g-C 3 N 4 [6] have been developed mainly for photo-oxidation reactions and Sonogashira coupling reaction. Very recently, as a part of interest in the developing heterogeneous nano-catalysts, [15][16][17][18][19][20] recently, we have reported fabrication of Cu@g-C 3 N 4 for [3 + 2] cycloaddition of nitroolefins/alkynes with sodium azide leading to NH-1,2,3-triazoles. [21] On the other hand, aromatic amines have founds several applications as intermediates and starting materials in the production of agrochemicals, dyes, pharmaceuticals and pigments.…”