Highly carboxyl-decorated graphene oxide sheets as metal-free catalytic system for chemoselective oxidation of sulfides to sulfones

A current overview of the oxidative desulfurization of fuels utilizing heat and solar light: from materials design to catalysis for clean energy

“…201 For example, Abdi and co-workers prepared GO using the modified Hummers' method and studied its catalytic activity in oxidizing sulfides to sulfones with H 2 O 2 . 202 In the absence of extractive solvent, GO achieved 95% conversion of thioanisole in 20 min owing to its amphiphilic property that allowed uniform dispersion in the organic phase. Apart from H 2 O 2 activation, the hydroxyl groups on the surface of GO also acted as the adsorption platform for sulfone to separate sulfur compounds from the fuels.…”

Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

“…It can be safely estimated that-even given some overlap-well over half a million of over 90 million indexed scientific works have been devoted to carbon allotropes. The discovery of graphene triggered the production of diverse 2D carbonaceous materials including graphone, graphane, and graphene oxide [25][26][27]. Graphynes (GYs) are layered two-dimensional structures built from sp-and sp 2 -hybridized carbon atoms (Figure 1A).…”

Reusable BNPs‐SiO2@(CH2)3NHSO3H‐catalysed selective oxidation of sulfides to sulfones

“…[18,19,[37][38][39][40][41][42][43][44][45] All reactions were monitored by TLC. [18,19,[37][38][39][40][41][42][43][44][45] All reactions were monitored by TLC.…”

“…[14] Boehmite nanoparticles (BNPs) have several advantages, such as non-toxicity, ready availability, high dispersion of active phases, thermal and mechanical stability and high surface area, resulting in high catalyst loading capacity. [19][20][21][22][23][24][25][26][27][28][29][30][31] It should be noted that these procedures have some disadvantages, such as the inability for selective oxidation of sulfides, reactivity towards other functional groups, use of excess amount of oxidant with respect to substrates, lack of reusability of catalyst, use of organic solvents, low yields, expensive oxidants and harsh reaction conditions. [16,17] The derivatives of heteroaryl sulfones constitute core units of many important molecules which are used as drugs and potential precursors [18] (Figure 1).…”