pyridine

Noun

Meaning

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.

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Examples

Among the largest 25 production sites for pyridine, eleven are located in Europe (as of 1999). Source: Internet

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. Source: Internet

Biosynthesis Several pyridine derivatives play important roles in biological systems. Source: Internet

Bönnemann cyclization Bönnemann cyclization The trimerization of a part of a nitrile molecule and two parts of acetylene into pyridine is called Bönnemann cyclization. Source: Internet

Compared to pyridine, N-alkylation and N-oxidation are more difficult. Source: Internet

Direct nitration of pyridine requires harsh conditions and has very low yields. Source: Internet

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