Abstract:
A synergistic insecticidal composition containing more than one active ingredients and being harmless to environment characterized by comprising in an amount of from 0.001 to 99% by weight a synthetic pyrethroide of the formula (I) - namely substantially only the 1RtransS and 1StransR enantiomer-pair (Ib) out from the possible eight isomers - optionally in admixture with an amount of up to 100% by weight of one or more activator(s) and auxiliary agent(s), particularly antioxidants, stabilising agents, wetting agents, emulsifying agents, dispersing agents, antifoam agents, diluents and/or fillers. The enantiomer-pair Ib consisting of the 1RtransS and 1StransR isomers is new and the invention also relates to the said new enantiomer-pair and a process for the preparation thereof. The advantage of the insecticidal composition of the present invention is that it is less toxical towards warm-blooded animals and useful parasites and is therefore much less harmful to the environment.
Abstract:
The invention relates to a process for the preparation of pure isoflavone derivatives of general formula (I), wherein R stands for hydrogen or isopropyl, R and R stand for hydrogen or C1-2 alkoxy by reacting a rezorcinol-derivative of general formula (III) wherein R and R are as given above with ethyl-orthoformiate of the formula (IV): (C2H5O)3CH in the presence of a base and optionally by alkylating the product. The process is carried out by subjecting the compounds of general formula (III) and (IV), wherein R and R are as given above, to ring-closure at 70-100 DEG C in the presence of an organic solvent, preferably dimethyl-formamide and/or isopropanol in a 0.3-2-fold volume calculated to the volume of the rezorcinol derivatives and/or in the presence of excess of the ester of formula (IV) in order to produce a 20-70 % by weight solution (supersaturated) of the product of general formula (VII) wherein R and R are as given above, and whereby the product of general formula (VII), wherein R and R are as given above, continuously precipitates from the mixture and filtering the product of general formula (VII) after cooling from the reaction mixture and/or adding a polar or apolar solvent to the reaction mixture and selectively dissolving thus the side product and filtering the product of general formula (VII), wherein R and R are as given above, and/or adding to the reaction mixture an almost equivalent amount of anhydrous potassium carbonate and isolating the crystallized double salt of general formula (V) wherein R and R are as given above, whereafter the products of general formula (V) or (VII) are reacted with isopropil-halide and optionally separating the pure product containing at most 0.5 % by weight of contaminating compound of general formula (VI).
Abstract:
The invention relates to ULV plant protecting arthropodicidal formulation comprising alkyl aryl polyglycol ether as further additives in addition to the active ingredient(s) dissolved in the mixture of aliphatic hydrocarbons and sunflower oil. The formulation according to the invention has an initial contact angle on the plant surface of > 13°, after 20 minutes of > 6° and it is after 120 minutes still at least 2°.
Abstract:
Pharmaceutical composition comprising as active ingredient a compound of general Formula (I), wherein R stands for straight or branched chain alkyl comprising 1 to 8 carbon atoms; phenyl alkyl having 7 to 10 carbon atoms; phenyl; or cycloalkyl comprising 3 to 8 carbon atoms; R stands for straight or branched chain alkyl comprising 1 to 8 carbon atoms, alkyl comprising 1 to 8 carbon atoms substituted by halogen, hydroxy, alkoxy having 1 to 4 carbon atoms or by one or two phenyl groups; phenyl; or cycloalkyl having 3 to 8 carbon atoms, with the proviso that groups R and R together contain at least three carbon atoms. The invention also relates to a process for the preparation of compounds of the general Formula (I) by methods known per se. The compounds of the general Formula (I) are psychostimulants having a new spectrum of effect which can be used in therapy for increasing psychical activity (learning and retention) and for treating clinical patterns of depression and deficites of learning and retention like in Alzheimer's disease, and are void of side effects (e.g. due to catecholamine release) of known stimulants.
Abstract:
An insecticidal composition containing more than one active ingredients which comprises as active ingredient in an amount of 0.001-99% by weight a synthetic pyrethroide of general Formula (I), (wherein X stands for chlorine or bromine) - namely out of the eight possible isomers at least 95% of a 55:45 - 25:75 mixture of the enantiomer-pairs Ia:Ib, wherein Ia is 1RcisS + 1ScisR and Ib is 1RtransS + 1StransR - if desired, in admixture with an activator and/or with an amount of up to 100% of an auxiliary agent, preferably an antioxidant, stabilizer, wetting agent, emulsifiying agent, dispersing agent, antifoam agent, diluent, carrier, and/or filler. The advantage of the insecticidal composition of the present invention is that it is less toxical towards warm-blooded animals and useful parasites and is therefore much less harmful to the environment.
Abstract:
New compounds of general formula (I) wherein R stands for hydrogen or C1-4 alkyl; and R represents C1-4 alkyl or C2-8 dialkylamino, or a group of general formula R -(CH2)n- wherein n is an integral number 1 or 2; R represents -COOR , wherein R is C1-4 alkyl or a group of general formula (II), and R and R stand for hydrogen or C1-4 alkoxy; or R and R together may form a group of formula -(CH2)2-O-(CH2)2- and salts thereof and a process for the preparation of the same. The compounds of general formula (I) exhibit useful pesticidal - particularly insecticidal, akaricidal and/or nematocidal - effect and the invention also relates to pesticidal compositions comprising as active ingredient at least one compound of general formula (I) or a salt thereof.