Rationalizations among heterocyclic partition coefficients. Part 2: The azines was written by Lewis, Susan J.;Mirrlees, Margaret S.;Taylor, Peter J.. And the article was included in Quantitative Structure-Activity Relationships in 1983.Recommanded Product: 4783-68-0 This article mentions the following:
π-Values (partition substituent constants) of 246 azines are given and discussed in terms of Δπ, the difference in π-value from that expected for C6H6. It is shown that Δπ is close to zero for alkyl and most halogen groups, but for polar substituents capable of H bonding it may be as high as φ1.6. Except for peri-positions, these Δπ-values may be correlated by a set of equations specific for different types of substituent position and containing terms which sep. parameterize proton-donor and -acceptor ability. The rationale behind this treatment is justified in terms of the nature of the octanol-H2O partitioning process and the manner in which electronic effects are expected to operate, in this context and that of the individual mol. Other topics discussed include: reasons for deviations among “irregular” substituents; the special problems of peri-positions; multisubstitution; and some consequences of this anal. for other types of compound In the experiment, the researchers used many compounds, for example, 2-Phenoxypyridine (cas: 4783-68-0Recommanded Product: 4783-68-0).
2-Phenoxypyridine (cas: 4783-68-0) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Recommanded Product: 4783-68-0