Process to 1,1-dihalo-4-methyl-1,3-pentadienes, pyrethroid insec

Details Process to 1,1-dihalo-4-methyl-1,3-pentadienes, pyrethroid insec Process to 1,1-dihalo-4-methyl-1,3-pentadienes, pyrethroid insec

1976-03-26

1978-01-24

Gerstl, Robert

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260633, 260658C, 560124, C07C 2100

Patent

active

040704041

ABSTRACT:
1,1-Dihalo-4-methyl-1,3-pentadienes, key intermediates in the synthesis of insecticidal dihalovinylcyclopropanecarboxylates, result from the condensation of 3-methyl-1-butene with a carbon tetrahalide in the presence of a catalyst, followed by the base-induced dehydrohalogenation of the 1,1,1,3-tetrahalo-4-methylpentane resulting from the condensation.

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Saunders, Acc. Chem. Res., 9, 19 (1976).

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