Abstract: A process for the preparation of D(-) and L(+)-3,3-diphenylalanine and D(-) and L(+)-substituted 3,3-diphenylalanines is described where N-protected DL-3,3-diphenylalanine or N-protected-DL-substituted 3,3-diphenylalanine are treated with (-)cinchonidine and the resulting salt resolved into the desired enantiomers, as well as derivatives thereof and valuable intermediates used in the process.

Abstract: Unsaturated cyclohexylacetic acid derivatives of the formula I ##STR1## where U is.dbd.NOCH.sub.3, .dbd.CHOCH.sub.3, .dbd.CH.sub.2, .dbd.CH--CH.sub.3, .dbd.CH--CH.sub.2 --CH.sub.3, .dbd.N--NH--CH.sub.3 or .dbd.CH--S--CH.sub.3,n is from 0 to 10,A is hydrogen or substituted or unsubstituted alkyl, cycloalkyl, aryl or hetaryl, andX is a single bond when n is 0, and oxygen, sulfur or a single bond when n is not 0, and the plant-compatible acid addition products and base addition products thereof, and fungicides and insecticides containing these compounds.

Abstract: A chelating compound of the formula:(R-NHOC-CH.sub.2).sub.n --A--(CH.sub.2 COOH).sub.m (I)wherein R is an aromatic ring-containing organic group, A is a residue of an aminopolyacetic acid excluding acetic acid groups (--CH.sub.2 COOH) therefrom, m is an integer of at least two and n is an integer of 1 or 2, or its salt, which has a specificity to a hepatobiliary system so that a complex formed between said chelating compound and a metallic element through a covalent bond is useful as a diagnostic or therapeutic agent for hepatobiliary organs and tissues.

Abstract: Xylylene diisocyanate is produced in higher space-time yield with higher selectivity by thermal decomposition of xylylene dicarbamate as an urethane compound, i.e. by subjecting the urethane compound to reactive distillation with a thermal decomposition catalyst of at least one of metals selected from antimony and tin or their compounds in the presence of an inert solvent having a higher boiling point than that of the resulting xylylene diisocyanate under reduced pressure of 1 to 500 mmHg and at 150.degree. to 350.degree. C. and then subjecting the resulting reaction products as distillates to partial condensation outside the reactive distillation system, thereby separately recovering the resulting alcohol and xylylene diisocyanate.

Abstract: Novel N-phenyl-N-carboxythioureas of the formula I ##STR1## in which R.sub.1 and R.sub.2 each represents C.sub.1 -C.sub.10 alkyl, C.sub.3 -C.sub.7 cycloalkyl or C.sub.5 -C.sub.6 cycloalkenyl,R.sub.3 represents hydrogen, halogen, C.sub.1 -C.sub.10 alkyl, C.sub.1 -C.sub.10 alkoxy or C.sub.1 -C.sub.10 alkylthio,R.sub.4 represents C.sub.1 -C.sub.10 alkyl, C.sub.2 -C.sub.10 alkenyl, C.sub.2 -C.sub.10 alkynyl or phenyl-C.sub.1-C.sub.7 alkyl; C.sub.1 -C.sub.10 alkyl, C.sub.2 -C.sub.10 alkenyl, C.sub.2 -C.sub.10 alkynyl or phenyl-C.sub.1 -C.sub.7 alkyl each mono- or poly-substituted by halogen or interrupted one or several times by oxygen and/or sulphur; C.sub.3 -C.sub.8 cycloalkyl; or C.sub.3 -C.sub.8 cycloalkyl mono- or poly-substituted by halogen or by C.sub.1 -C.sub.5 alkyl, andR.sub.5 represents C.sub.1 -C.sub.10 alkyl; phenyl-C.sub.1 -C.sub.7 alkyl; C.sub.1 -C.sub.10 alkyl or phenyl-C.sub.1 -C.sub.7 alkyl each mono- or poly-substituted by halogen or interrupted one or several times by oxygen and/or sulphur; C.

Abstract: This invention relates to fiber surface treating agnets containing a pyromellitate nucleus which have fungicidal, anti-microbial and anti-static properties, and blends of such agents with other types of surface modifiers.

Abstract: A process for preparing a substituted styrene by reacting a bisarylalkyl ether in the presence of an acid catalyst is disclosed. The process is preferably used for the preparation of 4-acetoxystyrene from 4,4'-(oxydiethylidene)bisphenol diacetate and 4-methoxystyrene from 4,4'-(oxydiethylidene)bisphenol dimethyl ether. A process for preparing a bisarylalkyl ether by reacting a corresponding arylalkanol in the presence of an acid catalyst is also disclosed.

Abstract: Novel substituted 2-phenoxyphenoxyethylcarbamic esters of the formula I ##STR1## where R.sub.1 is C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.4 alkenyl, R.sub.2 is C.sub.1 -C.sub.4 alkyl or a radical of the formula ##STR2## --C(CH.sub.3).sub.2 --CN or --N(R.sub.9)--COO--C.sub.1 -C.sub.4 alkyl, R.sub.3 and R.sub.4 independently of one another are hydrogen or methyl, R.sub.5 is fluorine or chlorine, R.sub.6 is either identical to the substituents given in the case of R.sub.5 or is hydrogen, R.sub.7 and R.sub.8 independently of one another are hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or nitro, R.sub.9 is C.sub.1 -C.sub.4 alkyl and n is zero, one or two, their preparation, their use in pest control, and pesticides containing these carbamic esters as active substance, are described. The preferred field of application is the control of pests on animals and plants, in partcular of eggs and larvae of phytophagous harmful insects and harmful mites.

Abstract: The invention provides compounds of formula I ##STR1## wherein W, D, R.sup.1, R.sup.2, R.sup.3, x, m, n and p are as defined in the description. The compound have valuable pesticidal activity especially against fungi, insects, nematodes, acarids and weeds.

Abstract: The present invention is directed to a process of preparing isocyanate-substituted isophthaloyl chloride by heating a mixture of amino-substituted isophthalic acid, catalyst, phosgene and halogenated solvent under autogeneous pressure.

Abstract: Method for the treatment or prophylaxis of thromboses or asthma in warm-blooded animal which comprises administering an effective amount of a compound having the formula: ##STR1## wherein R.sup.1 is phenyl group or phenyl group substituted by a member selected from the group consisting of C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 alkoxy, halogen atom, trifluoromethyl, and nitro, or naphthyl group, and R.sup.2 is hydroxymethyl or a group of the formula: ##STR2## wherein R.sup.3 is hydrogen atom or C.sub.1 -C.sub.5 alkyl and R.sup.4 is C.sub.3 -C.sub.6 cycloalkyl, C.sub.2 -C.sub.6 alkoxycarbonyl-phenyl, carboxy-phenyl, C.sub.1 -C.sub.5 alkyl, or C.sub.1 -C.sub.5 alkyl having a substituent selected from C.sub.1 -C.sub.5 alkoxycarbonyl, carboxy, C.sub.2 -C.sub.6 alkoxycarbonyl-phenyl, carboxy-phenyl, C.sub.2 -C.sub.6 alkoxycarbonyl-(C.sub.3 -C.sub.6) cycloalkyl and carboxy-(C.sub.3 -C.sub.6) cycloalkyl, or a pharmaceutically acceptable salt thereof to said warm blooded animal.

Abstract: Optical resolution of (.+-.)-2-(3-benzoyl)-phenylpropionic acid is attained effeciently in high yield by the use of a specific optically active amine which is represented by the general formula [I]: ##STR1## wherein R.sup.1 either stands for a hydrogen atom, a chlorine atom, a bromine atom, a methyl group, or an isopropyl group or participates, as a divalent group, in forming a benzene ring in combination with two carbon atoms adjoining each other in a benzene ring to which the substituent, R.sup.1, is bonded, R.sup.2 stands for a lower alkyl group, a hydroxymethyl group, an .alpha.-hydroxybenzyl group, or a ##STR2## group (R.sup.3 standing for a hydrogen atom, a chlorine atom, a bromine atom, or a methyl group), n for 0 or 1, and * for the center of optical activity.

Abstract: A process for obtaining a substantially pure enantiomer of ibuprofen is described. The process utilizes first an enantiomerically enriched mixture of ibuprofen obtained from kinetic resolution, diastereomeric crystallization or asymmetric synthesis processes. This enriched mixture is dissolved in a solvent and solid racemic ibuprofen is separated, leaving a mother liquid comprising the solvent and the enriched enantiomer substantially free of the other enantiomer.

Abstract: A process for efficiently preparing an unsaturated dicarboxylic acid diester, which comprises reacting a conjugated diene, carbon monoxide, an alcohol and oxygen in the presence of a catalyst comprising (a) a platinum metal, a salt thereof or a complex compound of a platinum metal, (b) at least one metal salt selected from the group consisting of a copper salt, an iron salt and a manganese salt and (C) at least one compound selected from the group consisting of (1) an alkali metal compound or an alkaline earth metal compound, (2) a rare earth metal compound, (3) a metal compound of the groups IIIA, IVA, IVB, VA, VB or VIA, and (4) a metal carbonyl complex. The unsaturated dicarboxylic acid diester is useful as an intermediate material in industrial chemical processes and can be efficiently prepared without the use of a dehydrating agent.

Abstract: A process for producing highly pure isophthalic acid which comprises (a) carrying out liquid phase oxidation of an m-dialkyl benzene with molecular oxygen in an acetic acid solvent in the presence of a heavy metal catalyst to form crude isophthalic acid, (b) contact-treating the resulting crude isophthalic acid with a noble metal catalyst belonging to the Group VIII of the Periodic Table supported by activated carbon in the presence of hydrogen, and then (c) separating the deposited isophthalic acid crystal and (d) filtration-treating the separated mother liquor and (e) recirculating the mother liquor thus treated into the liquid phase oxidation step (a) for reusing as a solvent in step (a) is disclosed.

Abstract: A process for preparing isocyanates comprising (a) contacting carbon dioxide and a primary amine in the presence of an aprotic organic solvent and an organic, nitrogenous base to produce the corresponding ammonium carbamate salt, and (b) reacting the ammonium carbamate salt with an electrophilic or oxophilic dehydrating agent to produce the corresponding isocyanate. A second embodiment comprises recovering the ammonium carbamate salt of step (a) prior to reacting the ammonium carbamate salt with an electrophilic or oxophilic dehydrating agent in the presence of an aprotic organic solvent and an organic, nitrogenous base.

Abstract: This invention discloses novel sulfoximines having the formula: ##STR1## where Z is C.sub.1 -C.sub.6 alkylene and Y is alkyl, arylalkyl, acyl, carbamoyl, sulfonyl or alkoxycarbonyl. The invention compounds are useful in the treatment of Class II arrhythmia.

Abstract: The present invention relates to a novel process for the production of low viscosity copolymers of maleic acid monoalkyl ester and vinyl alkyl ethers characterized in that the copolymerization of alkyl vinyl ether is performed with a mixture composed of maleic acid anhydride and maleic acid monoalkyl ester. The specific viscosity is controlled by the setting of a certain maleic acid anhydride to maleic acid monoalkyl ester ratio.

Abstract: The present invention relates to a process for the separation of the enantiomers of threo-2-hydroxy-3-(2'- aminophenylthio)-3-(4"-methoxyphenyl)-propionic acid, which is an important intermediate in the synthesis of pharmacologically active compounds, by means of the direct crystallization of the relevant cyclohexylaminic salt.According to a preferred form of practical embodiment of the present invention, the optically pure acid is recovered as the hydrochloride of the corresponding methyl ester.

Abstract: Aromatic dicarboxylic acids of the formula ##STR1## in which R.sup.1, R.sup.2, m, n, and X have the meaning mentioned in the description,can be prepared from the bisphenols, on which they are based, of the formula ##STR2## if the bisphenols are first reacted to give the bissulphonates, the sulphonate groups are removed catalytically with H.sub.2 and the hydrocarbons obtained in this way are doubly acylated in a known manner and the acyl groups are oxidized to the carboxyl groups.Many of the aromatic dicarboxylic acids which can be prepared in this way are new.