2130. 1-Chloro-2-butene

Nomenclature

CAS number: 591-97-9
α-Chloro-β-butylene; crotyl chloride; γ-methallyl chloride; γ-methylallyl chloride.
C4H7Cl; mol wt 90.55.
C 53.06%, H 7.79%, Cl 39.15%.

Description and references

Prepn of (E) and (Z)-forms: Hatch, Nesbitt, J. Am. Chem. Soc. 72, 727 (1950). Manuf: Carlson, US 2494034 (1950 to Shell); Montagna, Hess, US 3055954 (1962 to Union Carbide). Equilibrium constant for isomerization of 3-chloro-1-butene to 1-chloro-2-butene: Dittmer, Marcantonio, J. Org. Chem. 29, 3473 (1964).

Chemical structure

Derivative

(E)-Form.

Nomenclature

CAS number: 4894-61-5

Properties

Liquid, bp752 84.8°. nD20 1.4350, nD25 1.4327. d420 0.9295.

Derivative

(Z)-Form.

Nomenclature

CAS number: 4628-21-1

Properties

Liquid, bp758 84.1°. nD20 1.4390. d420 0.9426.

Caution

Irritates eyes, respiratory passages.