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Matches 951 - 1,000 out of 5,505

Document Document Title
WO/1998/056762A2
A process for preparing an optically active phenyloxirane compound represented by formula (II), wherein ring A is a substitued or unsubstituted benzene ring; R is a group represented by -CO�2?R?q�, or a group convertible to the group...  
WO/1998/055446A1
The preparation of aromatic ketones substituted with a thioether group at the ortho position is accomplished by the initial reaction of an aromatic nucleus substituted with a halide and an ortho nitro group with a nitroalkane in the pres...  
WO/1998/055438A1
The condensation reaction of a ketone with either an ester or a carbonate to form, respectively, a 1,3-diketone or a $g(b)-ketoester often affords poor results under the standard condensation reaction conditions. High yields and high pur...  
WO/1998/054118A1
A method wherein a gas stream containing carbon oxide and hydrogen sulfide is first passed in contact with a catalyst comprising a supported metal oxide of a metal selected from the group consisting of vanadium (V), niobium (Nb), molybde...  
WO/1998/050350A1
A mixture formed from one or more alkyl disulfides, benzene, and at least about 1.5 equivalents of Lewis acid catalyst is heated to form alkanethiobenzene. Reaction in a mixture formed from excess benzene, dimethyldisulfide (DMDS) and A1...  
WO/1998/049124A1
The invention relates to a novel method for producing enantiomer-free biarylketocarboxylic acids, whereby S-phenylethylamine is used as an auxiliary base in racemate resolution. Biarylketocarboxylic acids, specially substituted biaryl-4-...  
WO/1998/045271A1
A process for the manufacture of a phenylthiobutyl-isoquinoline of formula (II) and novel intermediates therefor.  
WO/1998/043967A1
A new process for producing 2-(benzo[b]thiophen-5-yl)-2-hydroxyacetic acid derivatives used as intermediates for compounds of general formula [1] or optically active compounds thereof, useful as a cerebral function ameliorant.  
WO/1998/035934A1
A highly economical and efficient process for producing optically active homophenylalanine derivatives represented by general formula (IV); and intermediates therefor and a process for producing the same. The process comprises reacting a...  
WO/1998/032735A1
A process for the free-radical addition of a mercaptan to a nonconjugated olefinic substrate having a terminal carbon-carbon double bond is disclosed. 2-Hydroxy-4-(methylthio)butanoic acid (HMBA) or methionine can be prepared using this ...  
WO/1998/030538A1
A process for producing cysteine derivatives having especially high optical purities economically advantageously at a high production efficiency even on an industrial scale. The process for producing cysteine derivatives represented by g...  
WO/1998/030537A1
The present invention relates to novel amidino compounds of formula (I), to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use as selective inhibitors of ...  
WO/1998/024748A1
The invention concerns a novel process for the racemization of substituted 4-ketocarboxylic acids. The process represents a novel economic way of returning an inactive enantiomer to the synthesis sequence and hence considerably increasin...  
WO/1998/018757A1
A process for preparing intermediates and benzoquinolin-3-one pharmaceuticals, such pharmaceuticals are effective in treating conditions consequent on 5$g(a)-reductase.  
WO/1998/014426A1
A two step single-pot process for producing dimesna (NaSO�3?-(CH�2?)�2?-S-S-(CH�2?)�2?-SO�3?Na) begins by reacting an $g(v)-alkenesulfonate with a sulfide such as NaSH to yield mesna (HS-(CH�2?)�2?-SO�3?Na). (This can b...  
WO/1998/013331A1
The present invention relates to a hydrogenation process for the preparation of aromatic amino compounds containing directly on the aryl ring or in a side chain one or more entities that may also undergo hydrogenation, such as carbon mul...  
WO/1998/013327A1
A process for the production of hydroxyalkylated phenolic or hydroxyalkylated thiophenolic compounds is disclosed. The process comprises providing a phenolic or thiophenolic compound, a cyclic organic carbonate compound, and a catalyst s...  
WO/1998/011065A1
The instant invention is directed to a process for removing odor from alkylthioethylamine reaction product mixtures having said odor. The process comprises first contacting an alkylthioethanamine reaction product mixture with a neutraliz...  
WO/1998/009935A1
A process for preparing a compound having structure (I) wherein n is an integer from 1-5; each of R�1? and R�2? independently is optionally substituted C�1?-C�6? alkyl; each of W and X is independently hydrogen or C�1?-C�6? a...  
WO/1998/005609A1
The invention concerns a method for grafting a substituted difluoromethyle group on a compound containing at least one electrophilic function, comprising the following steps: i) bringing said compound containing at least one electrophili...  
WO/1998/004518A1
A process for preparing N-acylglycine derivatives of general formula (III) is characterised in that a carboxylic acid amide of general formula (II) is carbonylated with an aldehyde of formula RCHO in the presence of a solvent and of a mi...  
WO/1998/003451A1
The invention is directed to a process for reducing or reductively cleaving an organic compound susceptible to dissolving metal reduction comprising exposing the organic compound to a solution of lithium in a polyamine including at leat ...  
WO/1998/002414A1
N-Phenylcarbamate compounds represented by formula (1), wherein R?1� represents a hydrogen atom, an alkoxy group having 1 to 4 carbon atoms, an alkyl group having 1 to 4 carbon atoms, an alkynyl group having 3 to 5 carbon atoms, an alk...  
WO/1997/048678A1
A new process for the preparation of salts of an organic base and N,N'-diacetylcystine (DiNAC) is described, whereby N-acetylcysteine is oxidised in an aqueous or alcoholic solution in the presence of the organic base, or a salt containi...  
WO/1997/048679A1
New hydrated salts of N,N'-diacetylcystine are described, as well as processes for the preparation thereof.  
WO/1997/045420A1
The invention encompasses a process for making compounds of formula (I) or (Ia) useful in the treatment of cyclooxygenase-2 mediated diseases.  
WO/1997/045482A1
A process of the preparation of alkylthiopropionic pentaerythritol esters from pentaerythritol tetra-3-mercaptopropionate. In a first embodiment of the invention, pentaerythritol tetra-3-mercaptopropionate and an alpha-olefin are caused ...  
WO/1997/042358A1
The process comprises (A) obtaining N-acetylcysteine form L-cystine, through the following steps: (i) acetylation of L-cystine in order to produce N-acetylcystine; (ii) electroreduction and desalination by electrodialysis of N-acetylcyst...  
WO/1997/041093A1
Methods for the synthesis of Fmoc-protected amines are provided. These methods involve the treatment of an amine component with a silylating agent and then an activated Fmoc-reagent. The methods can be conducted under anhydrous conditions.  
WO/1997/037971A1
A process for the preparation of a thiol comprising reacting hydrogen with a thiocyanate or disulfide wherein the reaction with thiocyanate is conducted in the presence of a catalyst comprising a Group VIII metal or a mixture thereof; an...  
WO/1997/036848A1
Processes are disclosed for the conversion of propylene to methylmercaptopropanal by converting propylene to acrolein and converting acrolein to methylmercaptopropanal. The processes utilize oxygen and recycle propane to the acrolein rea...  
WO/1997/033865A1
A process for preparing thiol compounds of general formula (2): HS-CH2-CHR1-COOR2 (wherein R1 is H or methyl and R2 is H or a C1-C18 hydrocarbyl) by reacting an unsaturated compound of general formula (1): CH2=CR1-COOR2 (wherein R1 and R...  
WO/1997/032571A1
Graphitic nanotubes, which include tubular fullerenes (commonly called 'buckytubes') and fibrils, which are functionalized by chemical substitution or by adsorption of functional moieties. More specifically the invention relates to graph...  
WO/1997/031893A1
Thiols are trapped, and converted to disulfide compounds, by a process of reacting them with compounds containing a 1,2,4-thiadiazole ring structure carrying a substituent at position 3 of the thiadiazole ring, and being unsubstituted at...  
WO/1997/030762A1
An exercise apparatus including first and second elongated support members (14) pivotally mounted upon a support frame (12). First and second foot holders (20, 22) are movably mounted upon the first and second support members (14), respe...  
WO/1997/030962A1
A process for preparing 'alpha'-hydroxy acids by heating ammonium salts of 'alpha'-hydroxy acids of general formula (I), removing the formed ammonia and water, adding water to the residue, and heating the obtained mixture, wherein R is h...  
WO/1997/030037A1
The invention relates to a process for preparing a compound of formula (I), wherein R, R1 and Ar are as defined in the description, by the reaction of a compound of formula (II), wherein R, R1 and Ar are as defined in the description, wi...  
WO/1997/030026A1
The invention relates to a process for preparing a 2-(thiosubstituted)-4-haloacetophenone such as those of formula (I), which comprises reacting a 2,4-dihaloacetophenone with a thiolating agent under substantially anhydrous conditions. I...  
WO/1997/028105A1
Processes for reducing carbonyl compounds into hydroxyl compounds easily under milder conditions, particularly a process for reducing an 'alpha'-aminohaloketone derivative stereoselectively. The above process comprises treating a carbony...  
WO/1997/028122A2
The invention relates to a process for preparing compounds of formula (I), wherein R2 is lower alkyl; or phenyl optionally substituted by from one to five groups which may be the same or different selected from lower alkyl, lower haloalk...  
WO/1997/024417A1
Sulphur monochloride and a phenol are reacted to produce an oil-soluble intermediate which is then reacted with an unsaturated organic compound having one or more olefinic or acetylenic bonds to reduce the amount of active sulphur in the...  
WO/1997/024416A1
This invention concerns a process for preparing a sulfurized olefin containing reduced amounts of thiones using a low molecular weight hydrocarbon to precipitate the thiones from the sulfurized olefin.  
WO/1997/023452A1
In known processes: the MHA is isolated from a reaction mixture obtained by addition of hydrocyanic acid (HCN) to methylmercapto-propionaldehyde (MMP) and hydrolysis of the resulting methylmercapto-propionaldehyde cyanhydrine (MMP-CH) wi...  
WO/1997/022598A1
The present application discloses a synthesis of [S-(R*,R*)]-3-methyl-2-(3-oxo-3H-benzo[d]-isothiazol-2-yl)pe ntanoic acid and [S-(R*,R*)], L-2-{2-[2-(1-carboxy-2-methylbutylcarbamoyl)phenyldisulfonyl ]-benzoylamino}-3-methylpentanoic acid.  
WO/1997/021667A1
Known acetylation processes for producing N-acetyl-D,L-'alpha'-aminocarboxylic acids from the corresponding D,L-'alpha'-aminocarboxylic acids by acetylation with acetic anhydride in acetic acid and isolation of the resulting N-acetyl-D,L...  
WO/1997/021673A1
A method for achieving improved conversion rates and/or a faster reaction rate, particularly in reaction (a), than those achievable with prior art resins.  
WO/1997/021671A1
The invention provides the novel compound 4,4,4-trichlorobutyl methanesulfonate, useful as an intermediate in the production of certain agricultural pesticides, and a process for its manufacture.  
WO/1997/021649A1
A method for preparing organic disulphides and polysulphides by reacting sulphur with a mercaptan or a low-sulphur polysulphide to convert it into a high-sulphur polysulphide, or by reacting a mercaptan with a high-sulphur organic polysu...  
WO/1997/021650A1
With known methods of racemizing N-acetyl-D(L)-'alpha'-aminocarboxylic acids in the non-aqueous state by heating them to temperatures above room temperature, significant quantities of by-products are formed, especially acetyl dipeptides....  
WO/1997/021663A1
The disclosure relates to a process for obtaining optically active L-'alpha'-aminocarboxylic acids from the corresponding racemic D,L,'alpha'-aminocarboxylic acids. The following steps are involved: (a) the D,L,'alpha'-aminocarboxylic ac...  

Matches 951 - 1,000 out of 5,505