Transfer hydrogenation and hydration of aromatic aldehydes and nitriles using heterogeneous NiO nanofibers as a catalyst

Abstract

NiO NFs as an efficient heterogeneous catalyst for the synthesis of aromatic alcohols and amides.

Metal-Free-Catalyzed Synthesis of Allyl Nitriles via Csp2–Csp3 Coupling between Olefins and Azobis (Alkyl-carbonitrile)

“…The allyl nitriles are one of the most important compounds extensively existed in many pharmaceutical products [e.g., vitamin D receptor, pesticides, and anti-human immunodeficiency virus (HIV) agents] and commonly served as the industrial synthons in the synthesis of acrylic fibers, orlons, and acrylonitrile butadiene styrene (ABS)-resins. − In addition, the cyano-containing compounds widely employed as the versatile synthetic blocks could be readily transformed into amines, amides, and carboxylic acids . Due to their remarkable significance, the synthesis of allyl nitriles is still in high demand and has received considerable attention in the recent …”

Trash to Treasure: Eco-Friendly and Practical Synthesis of Amides by Nitriles Hydrolysis in WEPPA

“…Among the well-established synthetic methods for amide synthesis, nitrile hydration reactions are considered one of the most straightforward and economic. For this purpose, some elegant synthetic methods involving the hydration of nitriles and employing transition metal catalysts (e.g., Ru [30,31,32,33,34,35], Rh [36,37], Pd [38,39], Os [40], Ir [41], Pt [42], Cu [43,44,45], Ag [46,47], Au [48,49], Fe [50], Co [51], Ni [52,53], Mn [54,55], etc.) have been well documented.…”

“…These protocols usually have some inherent drawbacks. Some nitrile hydration reactions in aqueous media have been well documented, but transition metal catalysts, external strong acids, strong bases, and/or volatile organic solvents are usually indispensable in these transformations [30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65].…”

Pd/Fe3O4 Nanofibers for the Catalytic Conversion of Lignin-Derived Benzyl Phenyl Ether under Transfer Hydrogenolysis Conditions

“…Moreover, the electrospinning technique offers a simple and versatile route to immobilize metal particles in submicron-sized fibers improving the operational stability of samples when used, for example, in plug-flow reactors.Recently different nanofibers have been proposed for different catalytic applications [17]. For example, an electrospun nanofiber NiO catalyst was tested in the transfer hydrogenation of aromatic aldehydes and hydration of aromatic nitriles and was highly catalytically efficient, with a yield of above 90% [18]. A supported catalyst in the form of a Cu-doped cerium oxide nanofiber sample was prepared by electrospinning, obtaining a fiber-like nanostructure with higher surface area and higher Cu 2+ dispersion compared with a particle-like catalyst [8].In this study, two novel Pd/Fe 3 O 4 nanofiber-based catalysts were prepared via electrospinning by using two different synthetic approaches (Scheme 1):…”

“…Recently different nanofibers have been proposed for different catalytic applications [17]. For example, an electrospun nanofiber NiO catalyst was tested in the transfer hydrogenation of aromatic aldehydes and hydration of aromatic nitriles and was highly catalytically efficient, with a yield of above 90% [18]. A supported catalyst in the form of a Cu-doped cerium oxide nanofiber sample was prepared by electrospinning, obtaining a fiber-like nanostructure with higher surface area and higher Cu 2+ dispersion compared with a particle-like catalyst [8].…”