Boehmite nanoparticles as versatile support for organic–inorganic hybrid materials: Synthesis, functionalization, and applications in eco-friendly catalysis

A new silver coordination polymer based on 4,6-diamino-2-pyrimidinethiol: synthesis, characterization and catalytic application in asymmetric Hantzsch synthesis of polyhydroquinolines

“…applying silver reagents in the several reactions such as cycloaddition reactions, cyclization, coupling reactions and C-H functionalization, carbene, nitrene, silylene-transfer reactions and so on 1 – 6 . From the environmental and economic points of view, catalytic functional groups transformation technologies signify an important tool for the development of “green chemistry”, which means less waste generation and little energy consumption, as well as high atom economy and environmental friendliness 7 , 8 . Accordingly, as a result of their high catalytic performance, many transition metals, especially valuable metals such as ruthenium, platinum, palladium and iridium, are applied in these transformations 9 – 12 .…”

“…Moreover, multicomponent reactions (MCRs) are synthetic protocols which are able to join three or more substrates together in a highly regio- and stereoselective manner in order to deliver the structurally complex organic molecules 30 – 32 . Accordingly, it is worth mentioning that they have been remarkably applied in all fields of organic synthesis 7 , 13 , 33 – 36 . But, regarding the one pot synthesis, they give yield in a highly stereoselective manner which is useful for the organic transformations 37 – 39 .…”

Silver Coordination-Polymer based of 4,6-Diamino-2-pyrimidinethiol as Organic Ligand: a Highly Reusable Heterogeneous Nanocatalyst for the Asymmetric Hantzsch Synthesis of Polyhydroquinolines under Green Conditions

“…applying silver reagents in the several reactions such as cycloaddition reactions, cyclization, coupling reactions and C-H functionalization, carbene, nitrene, silylene-transfer reactions and so on [1][2][3][4][5][6] . From the environmental and economic points of view, catalytic functional groups transformation technologies signify an important tool for the development of "green chemistry", which means less waste generation and little energy consumption, as well as high atom economy and environmental friendliness 7 . Accordingly, as a result of their high catalytic performance, many transition metals, especially valuable metals such as ruthenium, platinum, palladium and iridium, are applied in these transformations [8][9][10][11] .…”

“…Moreover, multicomponent reactions (MCRs) are synthetic protocols which are able to join three or more substrates together in a highly regio-and stereoselective manner in order to deliver the structurally complex organic molecules. Accordingly, it is worth mentioning that they have been remarkably applied in all elds of organic synthesis 7,12,[28][29][30][31] . But, regarding the one pot synthesis, they give yield in a highly stereoselective manner which is useful for the organic transformations [32][33][34] .…”

“…Polyhydroquinolines have fascinated much interest because of their diverse pharmacological and therapeutic properties 12 . Most of the reported methods to synthesize polyhydroquinolines possess some speci c drawbacks such as low yield, harsh reaction condition and use of volatile organic solvent 7,[40][41][42] . The use of a variety of homogeneous and heterogeneous catalysts has been previously reported to synthesize various densely substituted polyhydroquinolines via traditional organic synthesis or MCR synthesis 32,[43][44][45][46][47][48] .…”