Abstract:
A process for the production of alkyl 3,11-dimethyl-7-ethyl2,6,10-tridecatrienoates starting from the S-oxide of 4-methyl5,6-dihydro-2H-thiapyran, 1-oxa-6-thia-spiro/2,5/octane and alkyl 3-methyl-4-halo-2-butenoate and the novel intermediates. The alkyl 3,11-dimethyl-7-ethyl-2,6,10-tridecatrienoates are intermediates in the synthesis of the juvenile hormone.
Abstract:
Novel insecticidal compositions and method wherein the active ingredient is an unsaturated Beta -keto ester of the formula
wherein A is selected from the group consisting of chlorine and bromine, B is hydroxy and A and B together form an epoxide, X and Y are hydrogen or indicate another bond between the carbon atoms to which they are attached, AlK is alkyl of 1 to 8 carbon atoms and m is 3,4 or 5 with the proviso that X and Y are hydrogen when A and B form an epoxide.