Feuerstein, Wolfram; Breher, Frank published an article in 2021. The article was titled 《Non-palindromic (C^C^D) gold(III) pincer complexes are not accessible by intramolecular oxidative addition of biphenylenes – an experimental and quantum chemical study》, and you may find the article in Dalton Transactions.Quality Control of 2-(Bromomethyl)pyridine hydrobromide The information in the text is summarized as follows:
Gold(I) complexes [(ArL)AuCl], [(ArL)Au(IPr)][SbF6] and [(Ar-NHC)2Au][SbF6] [ArL = 1-biphenylylmethylphosphine, 2-(1-biphenylyl)pyridine; IPr = 1,3-bis(2,6-diisopropylphenyl)-2-imidazolylidene; Ar-NHC = 1-(1-biphenylyl)-3-ethyl-2-imidazolylidene] were prepared by reaction of gold(I) precursors with donor-substituted biphenylenes. The oxidative addition of donor-substituted biphenylenes with gold(I) precursors to give gold(III) pincer CCD complexes was not observed unlike the known additions of unsubstituted biphenylenes; the reasons of this behavior are evaluated by DFT calculations We herein report on the synthesis of biphenylenes substituted with a pyridine (N), a phosphine (P) and a carbene (C’) donor as well as a carbene donor with addnl. pyridine in the lateral position. We describe the synthesis and structures of derived gold(I) complexes, which we tried to use for the synthesis of non-palindromic [(C-C-D)AuIII] pincer complexes by means of an intramol. oxidative addition of the strained biphenylene ring. However, the anticipated formation of gold(III) complexes failed due to kinetic and thermodn. reasons, which we extensively investigated by quantum chem. calculations Furthermore, we shed light on the oxidative addition of biphenylene to two different gold(I) systems reported in the literature. Our comprehensive quantum-chem. anal. is complemented by NMR experiments The results came from multiple reactions, including the reaction of 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Quality Control of 2-(Bromomethyl)pyridine hydrobromide)
2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Quality Control of 2-(Bromomethyl)pyridine hydrobromide