Process and intermediate products for preparing substantiall y isomer-pure e-2-(2-aryloxymethylene phenyl)-crotonic acid methyl esters

    公开(公告)号:AU5691896A

    公开(公告)日:1996-11-21

    申请号:AU5691896

    申请日:1996-04-23

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/01689 Sec. 371 Date Oct. 9, 1997 Sec. 102(e) Date Oct. 9, 1997 PCT Filed Apr. 23, 1996 PCT Pub. No. WO96/34847 PCT Pub. Date Nov. 7, 1996A process for the preparation of essentially isomerically pure methyl E-2-(2-aryloxymethylenephenyl)crotonates of the formula Ia Ia where R is an aromatic radical and R' is a C1-C3-alkyl group, which comprises first converting a suitable methyl 2-(2-aryloxymethylenephenyl)- alpha -ketoacetate with an alkyl metal compound of the formula IIIM-CH2-R'IIIwhere M is a metal ion equivalent into the corresponding methyl 2-(2-aryloxymethylenephenyl)- alpha -hydroxybutyrate of the formula IV, subsequently dehydrating IV in the presence of an acid to give a mixture of methyl E- and Z-2-(2-aryloxymethylenephenyl)crotonates and, subsequently, converting this mixture in the presence of a base in an inert polar solvent into the essentially isomerically pure methyl E-2-(2-aryloxymethylenephenyl)crotonate Ia.

    1-(1,2-diphenyl-ethyl)-3-(2-hydroxyethyl)-thioureacompounds for combating animal pests.

    公开(公告)号:EG25049A

    公开(公告)日:2011-07-19

    申请号:EGNA2007001264

    申请日:2007-11-20

    Applicant: BASF AG

    Abstract: The present invention relates to a method of combating animal pests which comprises contacting the animal pest, their habit, breeding ground, food supply, plant, seed, soil, area, material or environment in which the animal pests are growing or may grow, or the materials, plants, seeds, soils, surfaces or spaces to be protected from animal attack or infestation, with a pesticidally effective amount of at least one 1-(1,2-diphenyl-ethyl)-3-(2-hydroxyethyl)-thiourea compound I or an agriculturally acceptable salt thereof, wherein m is 0 to 5, n is 0 to 5, R 3 and R 4 are H or optionally substituted alkyl, haloalkyl, cycloalkyl, phenyl or benzyl, R 7 , R 8 , R 9 and R 10 are H or optionally substituted C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 1 -C 6 -alkylamino, C 1 -C 6 -alkoxy, C 3 -C 6 -cycloalkyl, phenyl or benzyl and the variables R 1 , R 2 , R 5 and R 6 are as defined in the claims. The invention relates also to a method for protecting crops from attack or infestation by animal pests, a method for protecting non-living materials from attack or infestation by animal pests, novel 1-(1,2-diphenyl-ethyl)-3-(2-hydroxyethyl)-thiourea compounds I and their agriculturally acceptable salts as well as to an agricultural composition comprising a 1-(1,2-diphenyl-ethyl)-3-(2-hydroxyethyl)-thiourea compound I or a salt thereof.

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