| 21. | All the ring atoms in the pyridine molecule are sp 2-hybridized.
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| 22. | Pyridine is used as a solvent in the manufacture of dyes and rubber.
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| 23. | Lewis bases such as tertiary amines and pyridines increase the rate of dihydroxylation.
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| 24. | Although phosphorine and pyridine are structurally similar, phosphorines are far less basic.
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| 25. | It can be prepared from bis-triazinyl pyridine.
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| 26. | Structurally, it is a pyridine N-oxide.
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| 27. | P 2 S 5 can be trapped for example as the pyridine complex.
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| 28. | Pyridine derivatives are commonly used for ortho-selective C-H functionalization.
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| 29. | The direct amination of pyridine with sodium amide takes place in liquid ammonia.
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| 30. | Two years later, Anderson isolated pure pyridine through fractional distillation of the oil.
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