Synthesis, Characterization and Synthetic Applications of Fly-ash:H3PO4 Nanocatalyst

Abstract

-The solid acidic nanocatalyst fly-ash:H3PO4 was prepared and characterized by FT-IR, SEM, EDS and TEM analysis. This catalyst was utilized for aldol condensation, coupling and cyclization reaction. The effect of catalytic activity of this fly-ash:H3PO4 nanocatalyst was studied with the obtained yield of products under solvent-free conditions. In this synthetic reaction the obtained yields were more than 95 %.

Bio-Potent Sulfonamides

“…An equimolar concentration of benzenesulfonyl chloride (1 mmol), 4-aminobenzoic acid (1 mmol), fly-ash:H 3 PO 4 (0.02 mg) catalyst 38 and 10 mL of ethanol were taken in 50 mL conical flask and mixed thoroughly. This mixture was subjected to ultrasound irradiation for 20-25 minutes in a ultrasonicator (Scheme 1) in room temperature.…”

“…Recently Dineshkumar and Thirunarayanan prepared more than 80% yields of mesalazines type sulphonamides 37 . In the literature surey, there is no report available for the ultrasonic assisted fly-ash:H 3 PO 3 nano catalyst 38 catalyzed condensation of substituted benzenesulfonyl chlorides and 4-aminobenzoic acid in ultrasonication under solvent-free conditions and its biological activities. Therefore herein the authors interestingly investigated the ultrasound assisted synthesis of some sulphonamides and evaluation of antimicrobial activities using the standard Bauer-Kirby 39 Disc diffusion method.…”

Ultrasound assisted synthesis and spectral correlations of some bio-active E-imines

“…General procedure for the Synthesis of E-imines (1-28) An equal molar quantities of aryl amines (1 mmol) substituted benzaldehydes (1 mmol) and 0.3 mg of nano y-ash H 3 PO 4 catalyst [43] and 20 mL of ethanol were ultrasonicated in ultrasonication bath at 40 Hz, in room temperature for 6-13 m (Scheme 1) (Citizen Ultra Sonicator, 40 Hz, 120W, 240V, AC). The progress of the reaction was monitored using TLC.…”