Computed Properties of C38H34N2O4P2. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: (R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine, is researched, Molecular C38H34N2O4P2, CAS is 221012-82-4, about Stereoselective alternating copolymerization of propene and carbon monoxide catalyzed by Pd(II) -chiral ligands treated with BF3 · Et2O. Author is Wang, Hai-jun; Li, Cheng; Wang, Lai-lai.
The use of BF3·Et2O as a co-catalyst in the alternating copolymerization of propene and carbon monoxide catalyzed by [L2]Pd (OAC)2 (L2 = chiral diphosphine ligand) in CH2Cl2/CH3OH was reported. High yields of chiral polyketone were obtained. 13C NMR, 1H NMR and molar optical rotation confirmed that the copolymers have an alternating structure and high streroregularity. The IR spectra of the copolymers showed that both spiroketal and pure ketone structures were present at the same time. Low mol. weight and wide polydispersity of the chiral polyketones were achieved.
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Quinoxaline – Wikipedia,
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