Solvent-Free Synthesis and Key Intermediate Isolation in Ni₂Dy₂ Catalyst Development in the Domino Ring-Opening Electrocyclization Reaction of Furfural and Amines

Abstract

Solventfree synthesis and key intermediate isolation in Ni2Dy2 catalyst development in the domino ringopening electrocyclization reaction of furfural and amines Article (Accepted Version) http://sro.sussex.ac.uk

Metal-Catalysed A3 Coupling Methodologies: Classification and Visualisation

“…The authors synthesised and characterised a copper(I) complex with tert-butyldiallylphosphine ligands. Single X-ray diffraction studies identified a cubane-like structure of the copper complex of formula [CuCl{κ 1 (P)-t Bu-P(CH 2 CH = CH 2 ) 2 }] 4 (5). However, variable temperature NMR studies indicated a dynamic behaviour in solution generated by the cubane chair isomerisation due to the low stability of the cube-like structure caused by the strong strain of the Cu 4 Cl 4 core for steric reasons.…”

“…It is unclear whether these principles apply to polycomponent reactions promoted by well-characterised species. Several studies on well-characterised catalysts, i.e., those in which the active species is known, suggest that these catalysts [5][6][7][8][9][10][11][12][13]:…”

Polyoxometalate-Driven Ease Conversion of Valuable Furfural to trans-N,N-4,5-Diaminocyclopenten-2-ones

“…On the other hand, microwave irradiation, tosylamine, and the ChCl/urea system were also used as metal-free procedures. In parallel, a series of heteronuclear {Ni­(II) 2 Dy­(III) 2 L 4 (DMF) 6 ] 2­(OTf)} coordination complexes (where Ln = Y, Dy; and H 2 L = ( E )-2-(((2-hydroxyphenyl)­imino)­methyl)-6-methoxyphenol), − as well as MIL series of MOF, with Fe-MIL-100 and -101 and a Dy­(III) complex, were reported to facilitate this reaction under mild conditions and with low catalyst loadings (Scheme , lower). It is worth noting that, in most of the above protocols, the reaction scope was limited to secondary amines; however, only sporadic examples applied to primary amines, i.e., aniline or 2-fluoroaniline with 3-bromofurfural …”

Improving the kinetics and dark equilibrium of donor–acceptor Stenhouse adduct by triene backbone design

“…To expand our understanding of tuning the performance of DASA based systems, we targeted structural modifications on the triene backbone. Substitution on the 3-position of the backbone has been shown to favour the closed form both in donor–acceptor Stenhouse adducts as well as Stenhouse Salts, 28,29 however other substitutions have been largely overlooked. We envisioned that by finding a position on the triene backbone which increases the relative energy of the stable closed form ( i.e.…”