777854-97-4Relevant articles and documents
Pseudocyclic bis-N-heterocycle-stabilized iodanes - synthesis, characterization and applications
Boelke, Andreas,Lork, Enno,Nachtsheim, Boris J.,Sadat, Soleicha
, p. 7434 - 7437 (2021)
Bis-N-heterocycle-stabilized λ3-iodanes (BNHIs) based on azoles are introduced as novel structural motifs in hypervalent iodine chemistry. A performance test in a variety of benchmark reactions including sulfoxidations and phenol dearomatizations revealed a bis-N-bound pyrazole substituted BNHI as the most reactive derivative. Its solid-state structure was characterizedviaX-ray analysis implying strong intramolecular interactions between the pyrazole nitrogen atoms and the hypervalent iodine centre.
The reaction of aromatic dialdehydes with enantiopure 1,2-diamines: An expeditious route to enantiopure tricyclic amidines
Christopher Braddock,Cailleau, Thais,Cansell, Gemma,Hermitage, Stephen A.,Pouwer, Rebecca H.,Redmond, Joanna M.,White, Andrew J.P.
experimental part, p. 2911 - 2919 (2011/03/19)
The condensation of enantiopure 1,2-diamines with terephthalaldehyde, isophthalaldehyde or 2-iodo-, 2-alkyl- or 2-aryl-1,3-benzenedialdehydes in toluene followed by treatment with NBS in dichloromethane gives direct access to enantiopure 1,4-, and 1,3-di(4,5-dihydro-1H-imidazol-2-yl)benzenes (diamidines). The condensation of o-phthalaldehyde, and other ortho-disubstituted aromatic dialdehydes, with enantiopure 1,2-diamines, without NBS, gives enantiopure 3,5-dihydro-2H-imidazol-[2,1]-isoindoles.