Wondering how to use Pyridine in a sentence? Below are 10+ example sentences from authentic English texts. Including the meaning and synonyms such as base or alkali.
Pyridine meaning
Any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and a nitrogen atom; especially the simplest one, C₅H₅N.
Using Pyridine
- The main meaning on this page is: Any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and a nitrogen atom; especially the simplest one, C₅H₅N.
- Useful related words include: base, alkali.
- In the example corpus, pyridine often appears in combinations such as: of pyridine, pyridine is, in pyridine.
Context around Pyridine
- Average sentence length in these examples: 21.4 words
- Position in the sentence: 9 start, 10 middle, 1 end
- Sentence types: 20 statements, 0 questions, 0 exclamations
Corpus analysis for Pyridine
- In this selection, "pyridine" usually appears in the middle of the sentence. The average example has 21.4 words, and this corpus slice is mostly made up of statements.
- Around the word, reason, using, bis, lewis, forming and synthesis stand out and add context to how "pyridine" is used.
- Recognizable usage signals include 1 in pyridine vs 150 and acetylene into pyridine is called. That gives this page its own corpus information beyond isolated example sentences.
- By corpus frequency, "pyridine" sits close to words such as absentees, accruing and aerosmith, which helps place it inside the broader word index.
Example types with pyridine
The same corpus examples are grouped by length and sentence type, making it easier to see the contexts in which the word appears:
Biosynthesis Several pyridine derivatives play important roles in biological systems. (10 words)
Pyridine is a reactive molecule, while carbon dioxide is generally inert. (11 words)
Compared to pyridine, N-alkylation and N-oxidation are more difficult. (11 words)
However, they require compromises in borderline cases; for example, nicotine contains a pyridine fragment from nicotinamide and pyrrolidine part from ornithine Aniszewski, p. 109 and therefore can be assigned to both classes. (32 words)
As a result, the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. (31 words)
For this reason, pyridine has a dipole moment and a weaker resonant stabilization than benzene ( resonance energy 117 kJ·mol −1 in pyridine vs. 150 kJ·mol −1 in benzene). (30 words)
Example sentences (20)
For this reason, pyridine has a dipole moment and a weaker resonant stabilization than benzene ( resonance energy 117 kJ·mol −1 in pyridine vs. 150 kJ·mol −1 in benzene).
Joule, pp. 125–141 Reactions on the nitrogen atom Additions of various Lewis acids to pyridine Lewis acids easily add to the nitrogen atom of pyridine, forming pyridinium salts.
Other methods The Kröhnke pyridine synthesis provides a fairly general method for generating substituted pyridines using pyridine itself as a reagent which does not become incorporated into the final product.
The ultra-violet (UV) to visible spectroscopic signatures of hemes are still used to identify heme type from the reduced bis-pyridine-ligated state, i.e., the pyridine hemochrome method.
Pyridine is a reactive molecule, while carbon dioxide is generally inert.
The official report details how dredging and pyridine were very unlikely to have caused the tragic die-off.
Among the largest 25 production sites for pyridine, eleven are located in Europe (as of 1999).
As a result, the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack.
Biosynthesis Several pyridine derivatives play important roles in biological systems.
Bönnemann cyclization Bönnemann cyclization The trimerization of a part of a nitrile molecule and two parts of acetylene into pyridine is called Bönnemann cyclization.
Chemical properties Pyridine is miscible with water and virtually all organic solvents.
Compared to pyridine, N-alkylation and N-oxidation are more difficult.
Dealkylation of alkylpyridines Pyridine can be prepared by dealkylation of alkylated pyridines, which are obtained as byproducts in the syntheses of other pyridines.
Direct nitration of pyridine requires harsh conditions and has very low yields.
Electrophilic substitutions Many electrophilic substitutions on pyridine either do not proceed or proceed only partially; however, the heteroaromatic character can be activated by electron-donating functionalization.
Hazards Pyridine has a flash point (the lowest temperature at which it can vaporize to form an ignitable mixture in air) of only 17 °C and is, therefore, highly flammable.
However, they require compromises in borderline cases; for example, nicotine contains a pyridine fragment from nicotinamide and pyrrolidine part from ornithine Aniszewski, p. 109 and therefore can be assigned to both classes.
However, unlike benzene and its derivatives, pyridine is more prone to nucleophilic substitution and metalation of the ring by strong organometallic bases.
In 1876, William Ramsay combined acetylene and hydrogen cyanide into pyridine in a red-hot iron-tube furnace.
In esterifications and acylations, pyridine activates the carboxylic acid halides or anhydrides.
Common combinations with pyridine
These word pairs occur most frequently in English texts:
- of pyridine 10×
- pyridine is 8×
- in pyridine 4×
- pyridine has 3×
- to pyridine 3×
- pyridine with 3×
- pyridine citation 2×
- using pyridine 2×
- pyridine itself 2×
- the pyridine 2×