Natural Indian Natrolite zeolite-supported Cu nanoparticles: a new and reusable heterogeneous catalyst for N-arylation of sulfonamides with boronic acids in water under ligand-free conditions

N‐(3‐silyl propyl) diethylene triamine N,N',N''‐tri‐sulfonic acid immobilized on Fe3‐xTixO4 magnetic nanoparticles: A new recyclable heterogeneous nanocatalyst for the synthesis of hexahydroquinolines

“…In continuation of our interest for development of more benign and efficient heterogeneous nanocatalysts and their application in organic transformations and synthesis of various heterocyclic compounds, herein, we were encouraged to prepare the hitherto unreported Fe 3‐x Ti x O 4 bonded N ‐(3‐silyl propyl) diethylene triamine N,N',N'' ‐tri‐sulfonic acid (Fe 3‐x Ti x O 4 @SPDETATSA) nanoparticles (Scheme ), and explore their potential activity as efficient and magnetically recoverable heterogeneous catalyst for the synthesis of hexahydroquinolines (Scheme ).…”

Development of a CuCl/phosphine system to catalyze phenylation and methylation ofN-tosyl aldimines with phenylboronic and methylboronic acids

“…The use of copper(II) chloride resulted in the formation of chloride 4-chloro-N -tosylbenzamide as a byproduct (4; 85% for 10 h) most probably through the phenylation of sulfonamide from aldimine hydrolysis (Scheme 2, Equation (1)) [25][26][27][28]. Replacing the copper salt by copper(II) acetate produced 4-chloro-N -tosylbenzamide (5; 95% for 30 min) (Scheme 2, Equation (2)) [29][30][31][32].…”

Considerable decrease in overvoltage of electro-catalytic oxidation of methanol by modification of carbon paste electrode with Cobalt(II)-clinoptilolite nanoparticles

“…This is due to high ion exchange capacity, definite pore size, high shape, charge and size selectivity, high catalytic activity, strong chemical, mechanical and radiation stability of zeolitic materials [13e17]. Among two synthetic and natural categories of zeolites, natural one is more abundant, cheap and environmentally friendly materials and hence most attentions have been focused to use them in different applications [18,19]. One of the most important and abundant natural zeolite with wide applications is clinoptilolite [20,21] which is the most abundant, cheapest and accessible zeolitic material in Iran.…”