Pyridine 1-Oxide
Title: Pyridine 1-Oxide
CAS Registry Number: 694-59-7
Additional Names: Pyridine N-oxide
Molecular Formula: C5H5NO
Molecular Weight: 95.10
Percent Composition: C 63.15%, H 5.30%, N 14.73%, O 16.82%
Literature References: Prepd industrially by heating pyridine in glacial acetic acid at 80° with 30% hydrogen peroxide. The acid is neutralized and the oxide recovered by distillation: Katritzky et al., J. Chem. Soc. 1957, 1769. Laboratory procedure using peracetic acid: H. S. Mosher et al., Org. Synth. coll. vol. IV, 828 (1963).
Properties: Deliquescent crystals, mp 66°; bp1.0 100-105°.
Melting point: mp 66°
Boiling point: bp1.0 100-105°
Derivative Type: Hydrochloride
Molecular Formula: C5H5NO.HCl
Molecular Weight: 131.56
Percent Composition: C 45.65%, H 4.60%, N 10.65%, O 12.16%, Cl 26.95%
Properties: Crystals from isopropanol, mp 179.5-181°.
Melting point: mp 179.5-181°
Use: Synthetic intermediate.

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