Mechanism of the reaction of allyl amination of Pd(II) allyl complexes containing chelating pyridine-chalcogen ligands. A surprisingly low influence of the chalcogen atom was written by Canovese, Luciano;Visentin, Fabiano;Santo, Claudio;Chessa, Gavino;Uguagliati, Paolo. And the article was included in Polyhedron in 2001.Category: alcohols-buliding-blocks This article mentions the following:
The rates of amine nucleophilic attack on the allyl ligand (k2) and the equilibrium constants (KE) for the displacement of bidentate ligands in Pd(II) allyl complexes of chelating pyridine-chalcogen ethers [Pd(η3-allyl)(RN-XPh)]+ (R=H, Me; X=S, Se) are shown to depend strongly on the steric and electronic requirements of the reactants but are hardly affected by the nature of the chalcogen. Results about the reactivity and solution behavior of these systems help build up a fairly complete mechanistic picture for this important class of reactions involving coordinated allyl species. In particular the reactivity of the complexes bearing pyridine-thioether ligands is close to that of their pyridine-selenoether analogs, probably owing to a balance of σ and π capabilities of the chalcogen atom. The associative nature of the ligand displacement is markedly affected by steric requirements which depend on the allyl bulkiness. The complexes bearing the ligands with Me substituted pyridine are the more reactive, due to the destabilization of the complex ground state induced by the distortion of the starting substrate. We also describe the fluxional behavior of these species in terms of inversion of the chalcogen absolute configuration and apparent rotation of the allyl ligand. In the experiment, the researchers used many compounds, for example, 6-Methyl-2-pyridinemethanol (cas: 1122-71-0Category: alcohols-buliding-blocks).
6-Methyl-2-pyridinemethanol (cas: 1122-71-0) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Category: alcohols-buliding-blocks
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts