Graphite oxide mediated oxidative aromatization of 1,4-dihydropyridines into pyridine derivatives

Promoter effect of sodium in graphene-supported Ni and Ni–CeO2 catalyst for the low-temperature WGS reaction

“…As long as the ceria-free catalysts are concerned, it is interesting to note that Ni/G-Na was active even in the absence of CeO 2 . It has been proposed that the reaction mechanism over Ni is similar to that for copper, and follows an associative mechanism analogous to that proposed for ceria [14,51,52,53] in which water is dissociated on the oxidized Ni surface to produce adsorbed hydroxyl groups and atomic hydrogen. The hydroxyl groups would then react with adsorbed carbon monoxide to form an intermediate and eventually…”

“…GO displays a rich oxygen chemistry, which allows its dispersion in aqueous solutions and the interaction with the metal and/or oxide precursors that would improve their dispersion. Several studies can be found concerning the use of GO as support [12], catalyst by its own [13,14]and as precursor of graphene (G) or reduced graphene oxide (rGO) [15]. For this latter approach, both metal/G or metal/rGO [16,17] and metal/oxide/G or metal/oxide/rGO systems [18,19,20] have also been developed.…”

Graphite oxide-promoted one-pot synthesis and oxidative aromatization of Hantzsch 1,4-dihydropyridines

“…This property has recently been applied for esterification of organic acids with alcohols under mild conditions [46]. On the other hand, the oxidative properties of GO are known and described in several examples [37, 39,40]. Indeed, we have recently demonstrated the efficiency of GO for the oxidative aromatization of 1,4-dihydropyridine into their corresponding pyridine derivatives [40].…”

“…In addition, GO is a cost-effective material and can be easily recovered from the reaction mixture by a simple filtration. Moreover, we have applied GO for the oxidative aromatization of 1,4-dihydropyridine derivatives in a one-pot reaction [40].…”

Palladium nanoparticles supported on reduced graphene oxide as an efficient catalyst for the reduction of benzyl alcohol compounds

“…Graphene oxide and graphite oxide have been successfully applied as effective heterogeneous catalysts for several organic transformations [16][17][18][19][20][21].…”