Abstract:
The invention relates to a method for producing 2,3-cis-substituted 2-aryl propenals by condensing a 2-aryl acetaldehyde I with a non-enolizable aldehyde compound II in the presence of a base. The inventive method is characterized in that the reaction is carried out in a solvent mixture comprising at least one water-miscible organic solvent and water at a volume ratio Vsolvent: Vwater ranging between 10:1 and 0.5:1.
Abstract:
The invention concerns the preparation of 3-(3,4,5,6-tetrahydrophthalimido)cinnamic acid esters of formula (I) (R1 = H, halogen; R2, R3 = halogen; R4 = C-organic rest; R5 = H, CH¿3?) by the reduction of 3-nitrocinnamic acid esters of formula (II) with hydrogen in the presence of a catalyst and the condensation of the 3-aminocinnamic acid esters obtained of formula (III) with a 3,4,5,6-tetrahydrophthalic acid anhydride of formula (IV). 3-(3,4,5,6-tetrahydrophthalimido)cinnamic acid esters of formula (I) are useful active agents in the plant-protection field.
Abstract:
PCT No. PCT/EP91/02166 Sec. 371 Date Apr. 29, 1993 Sec. 102(e) Date Apr. 29, 1993 PCT Filed Nov. 16, 1991 PCT Pub. No. WO92/09575 PCT Pub. Date Jun. 11, 1992.3-(3,4,5,6-tetrahydrophthalimido)cinnamic esters I I (R1=H, halogen; R2, R3=halogen; R4=C-organic radical, R5=H, CH3) are prepared by reducing 3-nitrocinnamic esters II and condensing the resulting 3-aminocinnamic esters III III with a 3,4,5,6-tetrahydrophthalic anhydride IV IV and are valuable active ingredients in crop protection.
Abstract:
Thiadiazabicyclononane derivatives of the formula I I (R1=H, F; R2=halogen; R3=H, C1-C4-alkyl; R4=H, C1-C8-alkoxycarbonyl, C3-C6-alkenyloxycarbonyl or C3-C5-alkynyloxycarbonyl, and these 3 groups may additionally bear C1-C4-alkoxy; X, Y, Z=O,= S; a=C2-C3-alkylene chain which in addition to R4 may bear up to 3 identical or different radicals R5: OH, COOH, C1-C4-alkyl or C1-C6-alkoxycarbonyl, and the last two radicals may in turn bear up to 5 halogen atoms or one of the following substituents; OH, CN, SH, C1-C4-alkoxy, C1-C6-alkylthio, C3-C6-alkenyloxy, C3-C6-alkenylthio, C3-C6-alkynyloxy, C3-C6-alkynylthio, C1-C6-alkylcarbonyloxy, C1-C6-alkoxycarbonyl, C1-C6-alkoxycarbonyl-C1-C4-alkoxy or C1-C6-alkoxycarbonyl-C1-C4-alkylthio). These thiadiazabicyclononane derivatives are suitable for use as herbicides.
Abstract:
N-Phenyltetrahydrophthalimide compounds of the formula I where R1 is hydrogen, fluorine or chlorine, R2 is chlorine or bromine, R3 is hydrogen or C1-C3-alkyl, and R4 is a 5- or 6-membered, saturated or unsaturated heterocyclic compound containing an oxygen or a sulfur atom and which is unsubstituted or substituted by a maximum of three C1-C3-alkyl groups, methods of manufacturing these compounds, and their use as herbicides.
Abstract:
N-phenyltetrahydrophthalimides of general formula I in which the substituents and the index have the following meanings: R is C1-C4-alkyl; n is 1 or 2; R is hydrogen or fluorine; R is halogen; R is hydrogen or C1-C4-alkyl; R is hydrogen or optionally substituted C1-C8-alkoxycarbonyl, C3-C6- alkenyloxycarbonyl or C3-C6-alkynyloxycarbonyl; X and Y represent oxygen or sulphur; A represents optionally substituted C2-C3-alkylene, where R does not represent hydrogen when X and Y denote oxygen, processes for their preparation, and herbicidal compositions containing them.
Abstract:
5-(N-3,4,5,6-tetrahydrophthalimido)cinnamic acid esters of the general formula I … … in which n represents 1 or 2 and the substituents have the following meanings:… R represents hydrogen or fluorine,… R represents halogen,… R represents hydrogen, halogen or C1-C4-alkyl,… R represents hydrogen, optionally substituted C1-C6-alkyl, C3-C7- cycloalkyl, C3-C6-alkenyl, C3-C6-alkynyl or benzyl,… R represents C1-C4-alkyl,… their preparation, and herbicidal compositions containing them.
Abstract:
Vinylazoles of the general formula I I where R1 and R2 are alkyl, cycloalkyl, tetrahydropyranyl, pyridyl, naphthyl, biphenyl or phenyl, these radicals being substituted or unsubstituted, X is CH or N, and plant-tolerated acid addition salts and metal complexes thereof, and crop protection agents containing these compounds.
Abstract:
Thiadiazabicyclononane derivatives of the formula I I (R1=H, F; R2=halogen; R3=H, C1-C4-alkyl; R4=H, C1-C8-alkoxycarbonyl, C3-C6-alkenyloxycarbonyl or C3-C5-alkynyloxycarbonyl, and these 3 groups may additionally bear C1-C4-alkoxy; X, Y, Z=O,= S; a=C2-C3-alkylene chain which in addition to R4 may bear up to 3 identical or different radicals R5: OH, COOH, C1-C4-alkyl or C1-C6-alkoxycarbonyl, and the last two radicals may in turn bear up to 5 halogen atoms or one of the following substituents; OH, CN, SH, C1-C4-alkoxy, C1-C6-alkylthio, C3-C6-alkenyloxy, C3-C6-alkenylthio, C3-C6-alkynyloxy, C3-C6-alkynylthio, C1-C6-alkylcarbonyloxy, C1-C6-alkoxycarbonyl, C1-C6-alkoxycarbonyl-C1-C4-alkoxy or C1-C6-alkoxycarbonyl-C1-C4-alkylthio). These thiadiazabicyclononane derivatives are suitable for use as herbicides.