Preparation of haloesters from dienes

Details Preparation of haloesters from dienes Preparation of haloesters from dienes

1973-05-10

1977-01-04

Garner, Vivian

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260497R, 260654H, C07C 6710

Patent

active

040013073

ABSTRACT:
A process for the preparation of 4-halo-3-methylbut-2-enyl lower fatty acid esters from isoprene comprising the steps of halogenating isoprene in the presence of a dipolar aprotic solvent to produce a reaction mixture of which a predominant portion is 1,4-dihalo-2-methyl-2-butene, and esterifying said dihalo-butene under esterification reaction conditions with an alkali metal salt of a lower fatty acid. The amount of alkali metal salt is sufficient stoichiometrically to replace the halogen ion in the 1-position with the anion of said alkali metal salt, a substantial portion of the product of the esterification reaction being desired 4-halo-3-methylbut-2-enyl lower fatty acid ester.

REFERENCES:
patent: 287249 (1943-04-01), Schmidt
patent: 2318323 (1943-05-01), Mueller-Cunradi et al.
patent: 2366667 (1945-01-01), Deebel
patent: 3031442 (1962-04-01), Webb
patent: 3110740 (1963-11-01), Peer et al.
patent: 3293286 (1966-12-01), Webb
patent: 3720704 (1973-03-01), Sakomura et al.
Hine, Physical Org. Chem., (1962), pp. 153-154.

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