Process for the manufacture of 1,1-dihalo-4-methyl-1,3-pentadien

Details Process for the manufacture of 1,1-dihalo-4-methyl-1,3-pentadien Process for the manufacture of 1,1-dihalo-4-methyl-1,3-pentadien

1978-01-09

1981-06-02

Gantz, Delbert E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 2119

Patent

active

042713250

ABSTRACT:
The dehydrohalogenation of a 1,1,1,3-tetrahalo-4-methylpentane to a 1,1-dihalo-4-methyl-1,3-pentadiene is accomplished in the liquid phase in the presence of a catalytic amount of stannic chloride. The diene is a useful intermediate in the manufacture of insecticidal synthetic pyrethroid esters.

REFERENCES:
patent: 2593451 (1952-04-01), Hill et al.
patent: 2803680 (1957-08-01), Conrad
patent: 3256325 (1966-06-01), Wakasa et al.
patent: 3299152 (1967-01-01), Inaba et al.
patent: 4053380 (1977-10-01), Fiyita et al.
patent: 4070404 (1978-01-01), Lupichuck

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