Abstract: The process according to the invention relates to the preparation of 2-chloromethyl-thiophene of the formula (I). During this process thiophene is chloromethylated in the presence of one or more compounds containing keto group and optionally it is transformed into the compound of the formula (II). Compounds of formula (I) and (II) are intermediates of several pharmaceutically active ingredients.

Abstract: The subject of the present invention is the preparation of the (R)-(?)-2-hydroxy-2-(2-chlorophenyl)acetic acid of the formula (I) by the resolution of the corresponding racemic compound by using the compounds of the general formula (II).

Abstract: The process according to the invention relates to the preparation of 2-chloromethyl-thiophene of the formula (I). During this process thiophene is chloromethylated in the presence of one or more compounds containing keto group and optionally it is transformed into the compound of the formula (II). Compounds of formula (I) and (II) are intermediates of several pharmaceutically active ingredients.

Abstract: The subject of the present invention is the preparation of the (R)-(−)-2-hydroxy-2-(2-chlorophenyl)acetic acid of the formula (I) by the resolution of the corresponding racernic compound by using the compounds of the general formula (II).

Abstract: Process for the preparation of compounds of formula (I) wherein R means hydrogen atom, or C1-6 alkyl group, or C7-12 aralkyl group or phenyl group, characterised in that: a) the compound of formula (III) is reacted with a compound of formula (IV) wherein X means halogen atom or C1-5 alkoxy group or hydroxyl group and the resulting compound of formula (II) is transformed in the presence of an oxidising agent in a reaction medium with pH above 7, into the compound of formula (I), or b) the compound of formula (III) is reacted with an anhydride of general formula (V) and the resulting compound of formula (II) transformed in the presence of an oxidising agent, in a reaction medium with pH above 7, into the compound of formula (I), or c) a compound of formula (II) is transformed in the presence of an oxidising agent, in a reaction medium with pH above 7, into the compound of formula (I), and if desired, the resulting compounds of formula (I), before or after isolation, are transformed into acid addition salts, or

Abstract: Process for the preparation of compounds of formula (I) wherein R means hydrogen atom, or C1-6 alkyl group, or C7-12 aralkyl group or phenyl group, characterised in that a) the compound of formula (III) is reacted with a compound of formula (IV) wherein X means halogen atom or C1-5 alkoxy group or hydroxyl group, and the resulting compound of formula (II) is transformed, in a reaction medium with pH above 7, into the compound of formula (I) or b) the compound of formula (III) is reacted with an anhydride of general formula (V) and the resulting compound of formula (II) transformed, in a reaction medium with pH above 7, into the compound of formula (I), or c) a compound of formula (II) is transformed, in a reaction medium with pH above 7, into the compound of formula (I), and if desired, the resulting compounds of formula (I), before or after isolation, are transformed into acid addition salts, or the compounds of formula (I) are liberated from their acid addition salts.

Abstract: The present invention relates to a process for the preparation of a compound of general formula (I), ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group of 1-6 carbon atoms, and their salts, wherein the compound of formula (II): ##STR2## is reacted with a compound of formula (III): ##STR3## wherein R represents an alkyl group of 1-4 carbon atoms and R.sup.1 is the same as defined above, by heating their neutral pH mixtures at the boiling temperature of the mixture, and the resulting compound of general formula (IV): ##STR4## wherein R and R.sup.1 are the same as defined above, is cyclized into the compound of general formula (I) by further elevating the temperature of the neutral mixture, and if desired, the compounds of general formula (I) are transformed into their salts, or the compounds of general formula (I) are liberated from their salts.

Abstract: A pure crystalline O-(2-hydroxy-3-piperidino-1-propyl) nicotinic acid amidoxime base of the Formula (Ib) ##STR1## is disclosed characterized by a melting point of 70.degree. to 73.degree. C., giving, when dissolved in an amount of 1 to 10 ml of concentrated sulfuric acid, a yellow homogeneous solution, and showing the following spectral characteristics:IR spectrum (kBr): .gamma. --O--C.dbd.N 1642 cm.sup.-1.sup.1 H-NMR spectrum (CDCL.sub.3, .delta. ppm): 1.48 m, (6H), CH.sub.2 -piperidine; 2.42 m, (6H), 3.times.CH.sub.2 --N; 3.36, br, (1H), CH--O; 4.08 m, (3H), 1--CH.sub.2, OH; 5.2, br, (2H), NH.sub.2 ; 7.30 m (1H), pyridine-5'; 7.92 m, 4', 8.62 m (1H), 6', 8.88 m, (1H), 2'.

Abstract: The inventions is a purer form of O-(2-hydroxy-3-piperidino-1-propyl)nicotinic acid amidoxime hydrochloride.

Abstract: The invention relates to a process for the preparation of such isomer mixtures of cypermethrine of the Formula (I) ##STR1## wherein carbon atoms indicated by 1, 3 and .alpha. stand for a chiral carbon atom and the wavy line indicates cis or trans configuration related to the cyclopropane ring--which contains out of the theoretically possible 8-isomers of cypermethrine at least 95% of 1RtransS and 1StransR (Ib) isomer pair or only a mixture of 1RcisC and 1ScisR (Ia) and the isomer pair (Ib) of the ratio (Ia):(Ib)=55:45-25:75 by asymmetric transformation of second order performed in the presence of an amine base and solvent from a starting cypermethrine isomer mixture which contains next to the isomer pair (Ib) cis and other trans isomers or the isomer pair Ia+Ib at an undesired ratio.

Abstract: The present invention relates to a multi-component pesticidal composition against anthropoda containing as active ingredient pyrethroides and phosphate esters and optionally piperonyl butoxide and excipients comprising as pyrethroid component 0.1 to 40 percent by weight of cypermethrin related to the total weight comprising out of the 8 possible isomers 40 to 100 percent by weight of 1RcisS and/or 1RtransS stereoisomer and as a second component at least one phosphoric acid, thiophosphoric acid or dithiophosphate being toxic on arthropoda at a ratio of 1:1-99 related to the amount of cypermethrin.

Abstract: The present invention relates to synergistic arthropodicidal composition of several pyrethroidal active ingredients causing no damage to warm-blooded organisms comprising pyrethroides and piperonyl butoxide as active ingredient which comprises as pyrethroidal active ingredient 0.1-20% by weight of 1StransR-alpha-cyano-3-phenoxy-benzyl-3- (2,2-dichlorvinyl)-2,2-dimethyl/cyclopropane-cyrboxylate of the Formula I ##STR1## 0.05-10% by weight of cis-trans-tetramethrin (3,4,5,6-tetrahydrophthalimido-methyl(1RS)-cis-trans-chrysantemate) or trans-tetramethrin of the Formula II ##STR2## and a further pyrethroide, 0.

Abstract: The invention relates to the separation of the geometrical isomers of cyclopropane carboxylic acids of formula (I) ##STR1## wherein R represents alkyl having 1 to 4 carbon atoms or halogen.

Abstract: The invention relates to new 2,3,4-trinor-1,5-inter-m-phenylene-PGI.sub.2 derivatives of the formula (I) ##STR1## wherein A stands for carboxy, cyano, tetrazolyl or --COOR.sup.3 or --CONR.sup.1 R.sup.2 ;R.sup.3 is C.sub.1-4 alkyl or an equivalent of a pharmacologically acceptable cation:R.sup.1 and R.sup.2 each stands for hydrogen, phenyl; C.sub.1-5 alkyl, optionally substituted by carboxy, hydroxy, phenyl or C.sub.2-5 alkoxycarbonyl; or C.sub.1-4 alkylsulfonyl; orR.sup.1 and R.sup.2 together form an .alpha.,.omega.-alkylene chain containing 3-6 carbon atoms;B stands for oxygen or methylene;Y is optionally bromo-substituted vinylene or a --C.tbd.C-- group:R.sup.4 stands for hydrogen or tetrahydro-pyran-2-yl;R.sup.5 represents an alkyl group containing 5-9 carbon atoms, which can be optionally interrupted by one or more oxygen atom(s) or --CH.dbd.CH-- or --C.tbd.

Abstract: The invention relates to a new and improved method for the preparation of N-phosphonomethyl-glycine, a potent pre-emergence herbicide. According to the invention glycine, formaldehyde and a dialkyl phosphite are condensed in an aqueous alkaline medium to form a N-phosphonomethyl-glycine dialkyl ester, and the diester is hydrolyzed with a mineral acid.