UN PROCEDIMIENTO PARA LA PRODUCCION DE UN COMPUESTO PARA LAREPRESION DE INSECTOS.

摘要

1315682 Alkenyl esters and amides ZOECON CORP 27 July 1970 [2 Sept 1969] 36192/70 Heading C2C [Also in Division C5] The invention comprises compounds of the Formula I where m is an integer of one to six, n is an integer of 2 to 6, R2 is a hydrogen atom or an alkyl radical R1 and R3-R6 are each alkyl radicals, R7 is the group -COOR9 or -CONR10R11 where R9 is a hydrogen atom or an alkyl, cycloalkyl, aralkyl or metal radical and each of R10 and R11 is a hydrogen atom or an alkyl, cycloalkyl, hydroxyalkyl, alkoxyalkyl, alkenyl or phenyl radical or together with the nitrogen atom to which they are attached form a pyrrolidine, morpholine, piperidine, piperazine or 4-alkylpiperazine radical, provided that when R7 is -COOR9 and R2 is H, at least one of R4, R5 and R6 is alkyl of at least two carbon atoms. These compounds and others of the above formula wherein R7 is not limited by the stated proviso may be prepared by reacting a compound of Formula II with an acetylenic ester or amide of formula R1C#C-R7. 1 - Bromo - 4 - ethyl - 4,7,7 - trimethyloctane is prepared by reacting phosphorus tribromide with 4 - ethyl - 4,7,7 - trimethyl - octan - 1 - ol which is prepared by reacting 3-chloro-3,6,6-trimethylheptane (II) with 3-bromo-1-(t-butoxy)- propane which is prepared from 3-bromopropanol and isobutene. II is prepared by reacting hydrochloric acid with 3,6,6-trimethylheptan-3-ol which is prepared from ethyl magnesium bromide and 5,5-dimethyl hexan-2-one which is prepared by dichromate oxidation of 5,5-dimethylhexan-2-ol which is prepared from methylmagnesium bromide and 4,4-dimethylpentan-1-al which is prepared from t-butyl chloride and acrolein diethyl acetyl. The methyl, ethyl and tetrahydropyran-2-yl esters of 3,7,7,11,11 - pentamethyldodec - 2 - en- 1-ol (III) are prepared by reacting the alcohol with diazomethane diazoethane and 2-chlorotetrahydropyran. III is prepared by reacting methyl 3,7,7,11,11- pentamethyldodec-2-enoate (I) with lithium aluminium hydride. Compounds I have pesticidal activity and may be used as such or in compositions together with an inert carrier and optionally an insect attractant.