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2,3-Dimethylpyridine

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Identification
Molecular formula
C7H9N
CAS number
583-61-9
IUPAC name
2,3-dimethylpyridine;2,4-dimethylpyridine;3,5-dimethylpyridine
State
State

These compounds are in liquid form at room temperature. They are volatile and should be handled with care to prevent inhalation and skin contact.

Melting point (Celsius)
-2.30
Melting point (Kelvin)
270.85
Boiling point (Celsius)
163.00
Boiling point (Kelvin)
436.15
General information
Molecular weight
107.16g/mol
Molar mass
107.1680g/mol
Density
0.9162g/cm3
Appearence

These pyridine derivatives are typically colorless liquids. They have a strong, ether-like odor, often associated with the pyridine class of compounds. These liquid compounds are slightly oily in touch and are used as intermediates in organic synthesis.

Comment on solubility

Solubility of Dimethylpyridines

The dimethylpyridines, including 2,3-dimethylpyridine, 2,4-dimethylpyridine, and 3,5-dimethylpyridine, exhibit interesting solubility properties due to their molecular structures and the presence of the nitrogen atom in the pyridine ring. Here are some key points regarding their solubility:

  • Polar Characteristics: The nitrogen atom in the pyridine ring contributes to a degree of polarity, which facilitates solubility in polar solvents such as water.
  • Solubility in Organic Solvents: These compounds are generally highly soluble in organic solvents, including ethanol and acetone, due to their non-polar hydrocarbon chains.
  • Influence of Substitution Patterns: The position of methyl groups on the pyridine ring affects solubility; for instance, 2,4-dimethylpyridine demonstrates different solubility characteristics compared to 2,3-dimethylpyridine.

In general, the solubility of dimethylpyridines can be summarized as follows:

  1. Highly soluble in organic solvents
  2. Moderate to low solubility in water
  3. Varies with substitution pattern

Overall, when considering the solubility of dimethylpyridines, it is important to note that their behavior in different solvents can distinctly vary due to their molecular structure, influencing their applications in various chemical processes.

Interesting facts

Interesting Facts about Dimethylpyridines

Dimethylpyridines are a fascinating group of chemicals derived from pyridine, a six-membered aromatic ring containing nitrogen. The three isomers—2,3-dimethylpyridine, 2,4-dimethylpyridine, and 3,5-dimethylpyridine—differ in the locations of the methyl groups attached to the pyridine ring. Here are some engaging insights:

  • Structural Diversity: The positioning of the methyl groups significantly influences the physical and chemical properties of each isomer, leading to different reactivities and applications.
  • Industrial Applications: These compounds are of great importance in the synthesis of a variety of chemicals, including agrochemicals and pharmaceuticals. For example, 2,4-dimethylpyridine is often used in the production of vitamin B6.
  • Biological Significance: Certain dimethylpyridines exhibit biological activity, making them interesting subjects in medicinal chemistry. Their properties can affect the efficacy of various drugs and compounds in biological systems.
  • Tuning Properties: By altering the structure (methyl group positions), chemists can fine-tune the properties of dimethylpyridines for specific applications, which is a concept called “structure-activity relationship.”
  • Research Insights: According to a research article, these compounds can act as effective solvents and catalysts in various chemical reactions, broadening their utility in modern organic chemistry.

In summary, the study of dimethylpyridines not only reveals their chemical nature but also highlights their potential in diverse fields such as materials science, pharmaceuticals, and biological research. As a chemistry student or professional, delving into these compounds is a gateway to understanding more about aromatic chemistry and its implications in real-world applications.