Dependence of the inhibiting effect of bipyridines and their hydro-derivatives on configuration was written by Forostyan, Yu. N.. And the article was included in Zashchita Metallov in 1983.Category: piperidines The following contents are mentioned in the article:
The inhibiting effect of bipyridines and their hydroderivs. (concentration 0.1%) on corrosion of steel St3 [39296-41-8] in solutions of 15% H2SO4 at 22° and constant mixing was studied. With increasing number at H atoms in mols. of bipyridines, the corrosion inhibition coefficient and protection degree increased due to an increase in the ionization constant (i.e. increase in the amine basicity). The inhibiting effect of bipyridines was directly associated with their configuration. In bipyridine hydroderivs., ionization coefficients were different due to the mutual arrangement of amino groups in mols. The greater the distance between amino groups (adsorption centers) in the bipyridine hydroderiv. mol., the higher the basicity of the compound and, thus, the ionization constant, inhibiting coefficient, and protection degree. 4,4‘-Bipyridine [553-26-4] and its hydroderivs. had the greatest inhibiting effect. This study involved multiple reactions and reactants, such as 3-(Piperidin-3-yl)pyridine (cas: 31251-28-2Category: piperidines).
3-(Piperidin-3-yl)pyridine (cas: 31251-28-2) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N–H bond in an axial position, and the other in an equatorial position.Category: piperidines
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem