3842. 3-Ethyl-4-picoline

Nomenclature

CAS number: 529-21-5
3-Ethyl-4-methylpyridine; β-collidine; 3-ethyl-γ-picoline; β-ethyl-γ-methylpyridine.
C8H11N; mol wt 121.18.
C 79.29%, H 9.15%, N 11.56%.

Description and references

Prepd from 2,6-dichloro-3-ethyl-4-methylpyridine by reduction with HI and red phosphorus: Ruzicka, Fornasir, Helv. Chim. Acta 2, 338 (1919); from 3-acetyl-1,4-dimethyl-1,2,5,6-tetrahydropyridine: Prelog, Komzak, Ber. 74, 1705 (1941); from γ-methylnicotinic acid: Rabe, Jantzen, Ber. 54, 925 (1921); from β-ethylpyridine: Koenigs, Hoffmann, Ber. 58, 194 (1925); from crotonaldehyde and ammonia: Tschitschibabin, Oparina, Ber. 60, 1877 (1927).

Chemical structure

Properties

Liquid, aromatic odor. d417 0.9286. bp753 195-196°; bp23 88-90°; bp12 76°. Volatile with steam. Sparingly sol in water. Soluble in alcohol, ether, chloroform, dil acids.

Derivative

Hydrochloride.
C8H11N.HCl; mol wt 157.64.
C 60.95%, H 7.67%, N 8.89%, Cl 22.49%.

Properties

Hygroscopic platelets, sol in water.