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| Number | Title | Issue Date |
| 4855446 | Process for the resolution of racemates using lactone esters Racemic carboxylic acids are resolved into their enantiomers using optically active enantiomers of four lactones as resolving agents. The four lactones are 2,3-isopropylidene-ribonic acid-1,4-lactone, 1,2-isopropylidene-glucofuranurono-3,6-lactone, 2... | 08/08/1989 |
| 4717418 | Herbicidal cyclohexane-1,3-dione derivatives The invention concerns novel compounds of the formula I ##STR1## wherein R1 is selected from hydrogen, alkyl, alkenyl, alkynyl, substituted alkyl, acyl, alkylsulfonyl, benzenesulfonyl, substituted benzenesulfonyl, and an inorganic or organ... | 01/05/1988 |
| 4704484 | Preparation of fluorinated organic compounds This invention relates to the fluorination of carboxylic acids with xenon difuoride in the presence of hydrogen fluoride. Novel fluorinated compounds containing aliphatic unsaturation are also disclosed.... | 11/03/1987 |
| 4697038 | Metal extraction using a novel group of compounds and chemical purification method Compounds of the formula ##STR1## in which; X represents a straight chain hydrocarbyl group containing from 8 to 17 carbon atoms; Y represents H or the group--CH.dbd.NOH, and Z represents H or the group--CH.dbd.NOH or the group--CPh.dbd.NOH, provided that... | 09/29/1987 |
| 4694023 | Alpha-alkyl polyolefinic carboxylic acids and derivatives thereof useful in the treatment of psoriasis and allergic responses Polyolefinic compounds represented by the general formula ##STR1## in which R and R1 are each hydrogen or an alkyl group of from 1 to 5 carbon atoms; R2 is an alkyl group of from 1 to 5 carbon atoms; R3 is hydroxyl, a... | 09/15/1987 |
| 4684737 | Process for producing substituted phthalic acid compounds A process for producing a substituted phthalic acid which comprises heating a substituted tetrahydrophthalic acid compound having a substituent in at least one of the 3-, 4-, 5- and 6-positions in the presence of sulfur to dehydrogenate it, and heat-treat... | 08/04/1987 |
| 4683241 | Phenolic ester derivatives as elastase inhibitors Phenolic esters of the general formula I ##STR1## are useful for the prevention, management or alleviation of elastase mediated diseases or conditions.... | 07/28/1987 |
| 4681974 | Fluorine-containing polymer A fluorine-containing polymer comprising units of the formula: ##STR1## wherein R1 and R2 are, the same or different, a fluorine-containing organic group, R3 and R4 are, the same and different, hydrogen or ... | 07/21/1987 |
| 4678665 | Polyanionic compounds derived from aromatic ethers of polyglycerols Products of formula (I) ##STR1## in which R=C6-18 aromatic or alkylaromatic of valency z, R'=H, C1-16 alkyl or phenyl, A=CH2 or CH2 --O-- and, in the latter case, R'.noteq.H, x=1-8, y=1-20, z=1-3 and T deno... | 07/07/1987 |
| 4678612 | Process for the production of arylsulfonyl halides There is disclosed a process for the production of arylsulfonyl halides, e.g., benzenesulfonyl chloride. The disclosed process adds a phosphorus-containing additive, e.g., phosphorous acid, before the reaction of an arylsulfonic acid with a sulfur halide ... | 07/07/1987 |
| 4677223 | Mercapto-C2 -C3 -alkanoic esters of citronellol, geraniol, homologues thereof and partially saturated derivatives thereof Described is the genus of mercapto-C2 -C3 -alkanoic acid esters of citronellol, geraniol, homologues thereof and partially saturated derivatives thereof defined according to the structure: ##STR1## wherein N represents 0 or 1; M... | 06/30/1987 |
| 4675432 | Method for the preparation of anilinofumarate The present invention relates to methods for the preparation of anilinofumarate, a useful intermediate in the preparation of quinoline-2,3-dicarboxylic acid and in the preparation of 2-(2-imidazolin-z-yl) quinoline-3-carboxylic acid herbicidal agents.... | 06/23/1987 |
| 4675434 | Process for producing phthalic acid esters A process for preparing phthalic acid esters of formula (I) which comprises reacting the phthalic acids of formula (II) with an aliphatic alcohol in the presence of a catalyst consisting essentially of the dialkyltinoxides of formula (III): ##STR1## ... | 06/23/1987 |
| 4673758 | Unsaturated polyesters Unsaturated polyesters of defined composition with a low content of polyalkylene glycol radicals in a narrow molecular weight range can be dispersed in water without external emulsifiers. These dispersions produce, after hardening, water and chemical resi... | 06/16/1987 |
| 4673692 | Diphenylmethylimine derivatives, their compositions and pharmaceutical uses A compound represented by the formula ##STR1## wherein R1 represents a hydroxyl group, an alkanoyloxy group or a group of the formula ##STR2## in which R2 represents a hydrogen atom or a lower alkyl group, and R3 | 06/16/1987 |
| 4672105 | Method for preparing esters of acrylic acid and methacrylic acid by transesterification A method for preparing an ester of (meth)acrylic acid with a polyhydric alcohol comprising, transesterifying a (meth)acrylic acid ester derived from an alcohol of 1-4 carbon atoms with a transesterifying polyhydric alcohol in the presence of at least one ... | 06/09/1987 |
| 4670579 | Telomerization of olefins An olefin, especially an activated olefin, is telomerized by reaction with an arylamine, such as an aniline, in the presence of an alkyl nitrite, a copper catalyst, and a catalytic amount of water and/or acid and in the absence of more than about 0.5 volu... | 06/02/1987 |
| 4670580 | Process for preparing oligomeric glycol esters of dicarboxylic acids The invention provides a process for the preparation of a polyester oligomer capable of being further polymerized to a high polymer wherein a glycol-dicarboxylic acid ester feed is treated in a secondary esterification zone under conditions such that the ... | 06/02/1987 |
| 4670431 | Beta-lactam antibacterial agents A compound having the partial structure (A): ##STR1## wherein n is 1 or 2.... | 06/02/1987 |
| 4670578 | Process for crystalline salts of L or (S)-3-(3,4-dihydroxyphenyl)-2-methylalanine esters Crystalline salts of (R,S)-pivaloyloxyethyl esters of (S)-3-(3,4-dihydroxyphenyl)-2-methylalanine and processes for their preparation are disclosed.... | 06/02/1987 |
| 4670587 | Process for reducing the 4-carboxybenzaldehyde content of a crude terephthalic acid product This invention relates to a process for the purification of crude terephtic acid. The process includes heating the crude acid on a first plate and locating a second plate adjacent the first plate whereby vapors emanating from the crude acid form a sublim... | 06/02/1987 |
| 4668833 | Hydrogenation of acetylene contained in hydrogen chlorine gas, and application thereof A process for hydrogenating acetylene in hydrogen chloride gas using the catalytic palladium supported on silicon carbide carrier whose iron content is specified to be not more than 1,000 ppm. The catalyst has the advantages of enhancing the conversion of... | 05/26/1987 |
| 4668817 | Alkyl substituted para-carboalkoxy cyclohexanones Described are para-carboalkoxy cyclohexanones defined according to the structure: ##STR1## wherein R1 represents hydrogen or C1 -C7 alkyl and R2 represents methyl or ethyl and uses thereof in augmenting or ... | 05/26/1987 |
| 4668509 | Polythioalkanecarboxylic anionic products, theur use and preparation Polythioalkanecarboxylic products of formula: ##STR1## in which R1 =C6-30 aromatic or alkylaromatic radical; R2 =C4 -C18 alkyl; A=C1-3 alkylene; M=H, alkali metal or alkaline earth met... | 05/26/1987 |
| 4668818 | Methyl methacrylate production In the process for the preparation of methyl methacrylate, the addition of aromatic diamine in an acidic environment reduces yellow color in the polymerized product.... | 05/26/1987 |
| 4668832 | Dehydration of halogenated, unsaturated alcohols to form halogenated, conjugated dienes Halogenated, unsaturated alcohols are dehydrated by contacting the alcohol and a carrier gas with a silica alumina catalyst to form dienes of the formula: ##STR1## wherein each X is independently hydrogen, fluorine chlorine, or bromine with the ... | 05/26/1987 |
| 4668822 | Method for preparing (+)S-2--hydroxy-2-methyl-hexanoic acid A method for preparing an important stereo-specific intermediate in the synthesis of prostaglandin analogs is disclosed. Said intermediate is (+)S-2-hydroxy-2-methyl-hexanoic acid and is prepared via an asymmetric halolactonization reaction utilizing L-pr... | 05/26/1987 |
| 4668429 | Partial oxidation process Synthesis gas is produced by the partial oxidation of a feedstock comprising petroleum coke and/or heavy liquid hydrocarbonaceous fuel containing sulfur and having an ash that contains nickel, vanadium and a comparatively high level of silicon. An iron an... | 05/26/1987 |
| 4668428 | Partial oxidation process Synthesis gas is produced by the partial oxidation of a feedstock comprising petroleum coke and/or heavy liquid hydrocarbonaceous fuel containing sulfur and having an ash that contains nickel, vanadium and a comparatively low level of silicon. An iron-con... | 05/26/1987 |
| 4666941 | Pharmaceutical uses of substituted 6(5,6,7,8)tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)-2-naphthoic acid and its esters New polysubstituted derivatives of naphtalene. These derivatives correspond to the following formula: ##STR1## in which: R1 to R4 is H or CH3 R5 is ##STR2## or (iv) the radical: 2-oxazolinyl m is 0 or 1 R | 05/19/1987 |
| 4666510 | Cyclohexenone derivatives and their herbicidal use. The invention concerns novel compounds of the formula I ##STR1## wherein: X is selected from halogen, nitro, cyano, alkyl, substituted alkyl, hydroxy, alkoxy, substituted alkoxy, alkenyl, alkynyl, alkenyloxy, alkynyloxy, acyloxy, alkoxycarbonyl, alky... | 05/19/1987 |
| 4667053 | Process for oxidative carbonylation using a catalyst having a novel support This invention relates to the carbonylation of olefins. More particularly it involves the carbonylation of an -olefins such as ethylene to form diesters, such as, for example, dimethyl succinate, 3-methoxypropionate and dimethylcarbonate by a proce... | 05/19/1987 |
| 4667055 | Leukotriene antagonists Compounds having the formula: ##STR1## are antagonists of leukotrienes of C4, D4 E4 and the slow reacting substance of anaphylaxis. As such, these compounds will be useful as anti-asthmatic, anti-allergic, anti-inflam... | 05/19/1987 |
| 4667054 | Process for producing optically active valine This invention relates to a process for producing optically active valine, characterized by optically resolving DL-valine hydrochloride in a solvent containing an amine salt, a sulfonic acid or a carboxylic acid and isolating optically active valine after... | 05/19/1987 |
| 4666835 | 2-vinylpenams and process 6ଲ-(L--Aminoadipoyl)-2-vinyl-2ଲ-methylpenam-3-carbo xylic acid is provided in an enzymatic process converting δ-(L--aminoadipoyl)-L-cysteinyl-D-γ,δ-didehydrois oleucine with isopenicillin N synthetase. The 2-vinylp... | 05/19/1987 |
| 4665215 | Process for producing 4-acetoxybenzoic acid A process is provided for the production of 4-acetoxybenzoic acid by subjecting phenyl acetate to a Fries rearrangement or phenol and an acetylating agent to a Friedel-Crafts acetylation to form 4-hydroxyacetophenone which is then acetylated with an acety... | 05/12/1987 |
| 4665218 | Method for the preparation of alkoxymethylene compounds of acetic esters and substituted acetic esters Disclosed is a method for preparation of alkoxymethylene compounds, especially methoxymethylene compounds, from substituted or unsubstituted acetic acid alkyl esters, especially methyl esters, from the corresponding hydroxymethylene compounds or their alk... | 05/12/1987 |
| 4665243 | Process for preparing vinyl chloride monomer The energy requirements for preparing vinyl chloride monomer can be reduced by a process which includes the steps of purifying by distillation ethylene dichloride, compressing the ethylene dichloride vapor from the distillation column to a temperature and... | 05/12/1987 |
| 4665085 | Amidines, preparation process and therapeutical application thereof Compounds having the formula (I) wherein R1 and R2 are a hydrogen atom, an alkyl group or a hydroxy group, or else R1 and R2 form together a bivalent ethylene or trimethylene radical; R3 is a halogen ... | 05/12/1987 |
| 4665244 | Chlorinated derivatives of hexadecene, their preparation and their use in the synthesis of vitamin E Hexadecene derivatives of the formulae: ##STR1## and ##STR2## in which X and X1, which may be identical or different, each represent hydrogen or chlorine, and their mixtures, are useful in the preparation of tocopherol and tocoph... | 05/12/1987 |
