Synthesis, X-ray and spectroscopic analysis of some pyridine derivatives

Cetina, Mario; Tranfić, Marina; Sviben, Igor; Jukić, Marijana

doi:10.1016/j.molstruc.2010.01.038

Cited by 11 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The progression of the N -methylation of the pyridine groups was monitored with UV–vis spectroscopy, following the decreasing of the band at 273 nm (Figure S7). The 1 H NMR analysis (in particular the signal at 4.8 ppm of the methyl groups bound to nitrogen) confirms the results obtained by UV–vis analysis. In 1 H NMR spectrum, all aromatic signals of pyridine protons are shifted at lower field with respect to nonmethylated PBMA–GUEST 5 (Figure S8), indicating that almost all pyridine groups are N -methylated.…”

supporting

confidence: 87%

Polymer Blending through Host–Guest Interactions

et al. 2014

View full text Add to dashboard Cite

In this work, a supramol. approach, based on mol. recognition, was used to direct the blending of immiscible polymers toward compatibility and even mol. miscibility. A slight modification of the two immiscible polymers polystyrene (PS) and poly(Bu methacrylate) (PBMA), with the introduction of the two recognition groups tetraphosphonate cavitand (HOST) and methylpyridinium (GUEST), resp., led to the formation of compatible mixts. between them, characterized by a single Tg and by an homogeneous texture at the surface level, as evidenced by AFM measurements. The energetically favorable host-guest interactions among polymeric chains overcome their repulsive interfacial energy, leading to the suppression of phase segregation at the level of material. The complexation between PS-HOST and PBMA-GUEST copolymers has been demonstrated to be reversible by the action of a specific external stimulus in the form of guest exchange with the competitive N-methylbutyl ammonium chloride

show abstract

supporting

confidence: 87%

Polymer Blending through Host–Guest Interactions

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Similarly, Cetina et al [34] designed a method for the synthesis of 2-pyridone using same reagents and piperidine catalyst under ethanol solvent condition (Scheme 16).…”

Section: -Pyridone Synthesis Via Cyclizationmentioning

confidence: 99%

Recent advances in synthesis of 2-pyridones: a key heterocycle is revisited

Heravi

Hamidi

2012

J IRAN CHEM SOC

View full text Add to dashboard Cite

Owing to the versatile applications in different areas including biology, natural compounds, dyes, and fluorescent materials, the synthesis of 2-pyridone compounds is an important research field and has attracted a great deal of attention. In this review, 2-pyridones new synthetic methods are classified to tree classes including reactions based on pyridine rings, cyclization, and cycloaddition reactions.

show abstract