Title:
4-METHYL-3-SULFENYL-3-ALLYL-4-PENTEN-2-ONE AND PREPARATION THEREOF
Document Type and Number:
Japanese Patent JPS5490111
Kind Code:
A
Abstract:
NEW MATERIAL:4-Methyl-3-sulfenyl-3-allyl-4-penten-2-one of formaula I (R is alkyl or aryl; R1 is H, lower alkyl or lower alkenyl).
EXAMPLE: 3-Allyl-3-benzenesulfenyl-4-methyl-4-penten-2-one.
USE: Intermediate for the synthesis of lethrolone constituting an alcohol part in pyrethroid insecticides. Said insecticides are harmless to mammals and plants, but exhibit an excellent insecticidal effect against insects.
PROCESS: A compound of formula I is prepared by reacting 4-methyl-3-sulfenyl-3-penten-2-one of formula II which is obtained from mesityl oxide (a dimer of acetone) as a raw material, with allyl halide of formula III (X is halogen) in the presence of a base, e.g. lithium diisopropylamide, sodium amide, etc..
Inventors:
FUJISAWA TAMOTSU
SAKAI KUNIKAZU
SHIROGATA HIROKO
FUKUSHIMA ASAKO
SAKAI KUNIKAZU
SHIROGATA HIROKO
FUKUSHIMA ASAKO
Application Number:
JP15657977A
Publication Date:
July 17, 1979
Filing Date:
December 27, 1977
Export Citation:
Assignee:
SAGAMI CHEM RES
International Classes:
C07C319/20; C07C67/00; C07C313/00; C07C323/22; (IPC1-7): C07C49/58; C07C149/14; C07C149/32
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