Covalent anchoring of copper-Schiff base complex into SBA-15 as a heterogeneous catalyst for the synthesis of pyridopyrazine and quinoxaline derivatives

Catalytic Activity of Cu/SBA‐15 for Peroxidation of Pyridine Bearing Wastewater at Atmospheric Condition

“…Fourier transform infrared (FTIR) spectra was obtained over a range of 4000-400 cm 21 with a Nicolet Avatar 370 Tu et al 13 Carrero et al 14 Karvana and Atak€ ul 15 Habimana et al 16 Chen et al 8 Calles et al 17 Wang et al 18 Patel et al 19 Bardajee et al 20 Prathap et al 21 Sorolla et al 22 Zhang et al 23 This work CSI spectrometer (Thermo Electrom Corporation). The sample to be characterized was grounded using KBr pellet technique.…”

Synthesis and Spectral Properties of New Octamethyl Substituted Tetrapyrazinoporphyrazines

“…In a typical literature procedure compound 1 was obtained under rigid conditions in boiling acid. [9,19] Other approaches involve catalysis of process by copper-Schiff base complex with ordered mesoporous silica [20] or using of α-hydroxy ketone. [18] Scheme 1.…”

Nitrilotris(Methylenephosphonic Acid) as a New Highly Efficient and Recyclable BrØNested Acid Catalyst for the Synthesis Of Quinoxaline Derivatives under Mild and Green Conditions

“…ACCEPTED MANUSCRIPT 3 cumbersome experiment and multistep procedures for the catalyst preparation [22,23] . Therefore, design and introduction of a simple, safe, cost effective, efficient, and benign method is still needed for the synthesis of quinoxaline derivatives.…”

“…A variety of reagents has been used to promote this transformation such as AcOH [9] , montmorillonite K-10 [10] , Polyaniline sulfate salt [11] , cerium(IV) ammonium nitrate [12] , sulfamic acid [13] , Wells-Dawson heteropolyacid [14] , ionic liquid 1-n-butylimidazolium tetrafluoroborate [15] , zirconium tetrakis(dodecylsulfate) [16] , iodine [17] , gallium(III) triflate [18] , β-cyclodextrin [19] , nanomagnetic Fe 3 O 4 [20] , NbCl 5 [21] ,Cu/SBA-15 [22] ,and Pd/SBA-15 [23] .…”