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Deactivating effect of coke and basic nitrogen compounds during the methylcyclohexane transformation over H-MFI zeolite

“…Even so, quinoline molecule is the less deactivated because a high resonance stabilization can be achieved, by substituting in position 2, without introducing any positive charge in the nitrogen atom. Previous works showed that the electrophilic substitution of quinoline could be easily performed over H-Y zeolites at 350 • C [45,46]. Furthermore, our previous works with an H-USY zeolite and quinoline [29] demonstrated that the reaction occurred, specially when the amount of available acid sites was low.…”

Synthesis of N-heterocyclic compounds over zeolite molecular sieve catalysts: an approach towards green chemistry

“…In recent years several new methods have been reported for synthesis of 2,3-substituted quinolines in the liquid phase using transition metal-based Lewis acid catalysts, such as palladium, ruthenium, rhodium and iron complexes and aldehydes or alcohols in the presence of CO. [192][193][194][195] A number of attempts to synthesize quinolines in the vapour phase were also successful. [196][197][198][199][200] The gas-phase quinoline synthesis was reported by McAteer et al, 196 Ln(OTf) 3 and Sc(OTf) 3 were used to promote three component coupling reactions between aldehydes, amines, and dienes or alkenes. These Lewis acid catalysts were active in imine formation and successive imino Diels-Alder type reactions.…”

Zeolite H-BEA catalysed multicomponent reaction: One-pot synthesis of amidoalkyl naphthols – Biologically active drug-like molecules

“…The other salient features of zeolite include their low cost and excellent thermal stability which make them economically and environmentally feasible. 2 The use of zeolites as a catalyst is important in the development of clean technologies, since it avoids the drawbacks of the conventional technologies, mainly environmental pollution and corrosion of the equipment (figure 1).…”