Cucurbit[6]uril supported β-Ni(OH)₂ nanoparticles as a heterogeneous catalyst for the synthesis of quinazolines via acceptorless dehydrogenative coupling of alcohols with nitriles

Abstract

A new nanocomposite of β-Ni(OH)2 nanoparticles immobilized on cucurbit[6]uril, β- Ni(OH)2-CB[6], was designed and characterized using several physicochemical techniques, viz FTIR, PXRD, XPS, FESEM, HRTEM, EDAX, TGA, and ICP-OES. The...

Recent Advances in the Use of 2‐Aminobenzyl Alcohols in the Synthesis of Quinolines, Quinazolines and Other N‐Heterocycles

“…Another acceptorless dehydrogenative coupling strategy for the synthesis of quinazolines 33 was reported by Pathak et al (Scheme 48). [72] They utilized a nanocomposite of β-Ni(OH) 2 nanoparticles immobilized on cucurbit [6]…”

“…(Scheme 48). [72] They utilized a nanocomposite of β‐Ni(OH) 2 nanoparticles immobilized on cucurbit[6]uril as an efficient heterogeneous catalyst in the reaction of 2‐aminobenzyl alcohols 1 with aryl nitriles 46 . 2‐Arylquinazoline products 93 were obtained in good to excellent yields and high turnover numbers (TONs).…”

Interweaved needle‐shaped α‐Ni(OH)2 nanoparticles adorned on graphene oxide: A new class of heterogeneous catalysts for α‐alkylation of ketones and synthesis of azines

“…55 The Fourier transform infrared (FT-IR) and powder X-ray diffraction (PXRD) data of β nickel hydroxide adorned on graphene oxide (GO) is discussed in Figures S56 and S57. A scrutiny of the literature unveils that the β nickel hydroxide has been explored as a catalyst in only three organic transformations, [56][57][58] whereas percussion of the catalytic potential of α-Ni(OH) 2 in organic transformations is still a barren area.…”

The surface modification of the silica-coated magnetic nanoparticles and their application in molecular diagnostics of virus infection

“…The development of materials containing magnetic nanoparticles (MNPs) has focused intense research efforts due to their applications in catalysis 1 , 2 , magnetic separation 3 , and especially in biomedicine: as enhancing contrast agents for magnetic resonance imaging (MRI) 4 , 5 , targeted drug delivery 6 , 7 , the treatment of cancer by localized therapeutic hyperthermia 8 , 9 etc. For these applications, the magnetic iron oxide particles consisting of magnetite (Fe 3 O 4 ) or maghemite (γ-Fe 2 O 3 ) and appropriately coated should exhibit superparamagnetic behavior, significant saturation magnetization, high magnetic susceptibility and biocompatibility 10 , 11 .…”