pyridine - translation to αραβικά
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pyridine - translation to αραβικά

HETEROCYCLIC AROMATIC ORGANIC COMPOUND
Pyridinium salt; Pyridines; Ciamician-Dennstedt rearrangement; Emmert reaction; C5H5N; Gattermann-Skita synthesis; Azabenzene; C5NH5; Uses of pyridines; Bönnemann cyclization; Bonnemann cyclization; Toluenesulfonate formaldehyde; Tuluenesulphonamide formaldehyde; Ciamician–Dennstedt rearrangement; Gattermann–Skita synthesis; Pyridyl; Pyridine ring; Py ligand
  • Formation of acrolein from acetaldehyde and formaldehyde
  • Oxidation of an alcohol to aldehyde with the [[Collins reagent]]
  • Bond lengths and angles of benzene, pyridine, [[phosphorine]], [[arsabenzene]], [[stibabenzene]], and [[bismabenzene]]
  • Bönnemann cyclization
  • Elimination reaction with pyridine to form pyridinium
  • Ciamician–Dennstedt Rearrangement
  • structure of the [[Crabtree's catalyst]]
  • Gattermann–Skita synthesis
  • [[Hantzsch pyridine synthesis]] with acetoacetate, formaldehyde and [[ammonium acetate]], and [[iron(III) chloride]] as the oxidizer.
  • Crystal structure of pyridine
  • center
  • Metabolism of pyridine
  • Condensation of pyridine from acrolein and acetaldehyde
  • Resonance structures of pyridine
  • Pyridine with its free electron pair
  • substitution in the 2-position
  • substitution in the 3-position
  • Substitution in 4-position
  • Nucleophilic substitution in 2-position
  • Nucleophilic substitution in 3-position
  • Nucleophilic substitution in 4-position
  • Additions of various [[Lewis acid]]s to pyridine
  • Atomic orbitals in pyridine
  • Internal bond angles and bond distances (pm) for pyridine.<ref name=cox/>
  • Structure of pyridine ''N''-oxide
  • Reduction of pyridine to piperidine with [[Raney nickel]]
  • Atomic orbitals in protonated pyridine
  • date=1984}}</ref>
  • Thomas Anderson]]

pyridine         
بَيريدِين (من مشتقات البترول)
pyridine         
‎ بَيريدِين:من مشتقات البترول‎
NIACINAMIDE         
  • The active Nicotinamide group on the molecule NAD<sup>+</sup> undergoes oxidation in many metabolic pathways.
  • moiety]] (highlighted in red)
  • 500px
CHEMICAL COMPOUND
Vitamin PP; Pyridine-3-carboxamide; Nicotinic acid amide; 3-pyridinecarboxamide; ATC code A11HA01; ATCvet code QA11HA01; Niacin amide; Niacinamide

ألاسم

نِيكُوتِين

Ορισμός

Pyridine
·noun A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptomaines, may be mentioned. ·see Lutidine.

Βικιπαίδεια

Pyridine

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Pyridine is colorless, but older or impure samples can appear yellow, due to the formation of extended, unsaturated polymeric chains, which show significant electrical conductivity. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. As of 2016, it is synthesized on the scale of about 20,000 tons per year worldwide.