Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 101 - 150 out of 583

Document Document Title
WO/2001/027058A1
A process is described for the co-production of maleic anhydride and at least one C¿4? compound selected from butane-1,4-diol, $g(g)-butyrolactone, and tetrahydrofuran in which maleic anhydride is produced by partial oxidation of a hydr...  
WO1999057117A3
The invention relates to tyrosine kinase inhibitors of bis-indolyl compounds of formula (I), to the medicaments containing said inhibitors and to their use in treating malignant and other diseases caused by pathological cell proliferation.  
WO/2001/002596A1
The novel method enables oxidation of organic compounds with peroxycarboxylic acids which are produced in situ in the presence of enzymes by reacting hydrogen peroxide with saturated aliphatic carboxylic acid esters and/or mixtures of co...  
WO/2000/078743A2
The rate of aminolysis of butyrolactones is predictably adjusted by attaching a substituent having a known field effect value (F) to the alpha position before reacting the substituted butyrolactone with an amine. The aminolysis product i...  
WO/2000/053593A1
A process for the preparation of esters or lactones, which comprises reacting a ketone represented by general formula (1) (wherein R?a¿ and R?b¿ are each independently an organic group having a carbon atom at the position where the car...  
WO/2000/035835A1
A process of reacting (A) a compound capable of forming a stable radical which is selected from among (A1) oxygen compounds having carbon-hydrogen bonds at the position adjacent to the oxygen atom, (A2) carbonyl compounds and (A3) compou...  
WO/2000/035899A1
An improved process for the production of high yields of $g(d)-lactones and 5-hydroxy fatty acids from unsaturated fatty acids such as oleic acid is disclosed. The $g(d)-lactones may be produced by reacting one or more $g(D)?9¿ to $g(D)...  
WO/2000/027834A1
A process for production of tetrahydrofuran and gamma butyrolactone by hydrogenation of maleic anhydride recovered from a process of conversion of n-butane. The process consists essentially of the following steps: A) converting n-butane ...  
WO/1999/062895A1
A method for producing butyrolactones of general formula (I), wherein the substituents R?1¿ and R?2¿ stand for hydrogen, alkyl, aryl hydroxyalkyl or optionally substituted aryl and trialkylsilyl groups, by reacting alkynes of general f...  
WO/1999/057117A2
The invention relates to tyrosine kinase inhibitors of bis-indolyl compounds of formula (I), to the medicaments containing said inhibitors and to their use in treating malignant and other diseases caused by pathological cell proliferation.  
WO/1999/055654A1
The invention relates to a method for producing 1,4-butanediol, tetrahydrofuran and $g(g)-butyrolactone by oxidation of butane to a product flow containing maleic anhydride, absorption of maleic anhydride from the product flow with a hig...  
WO/1999/055691A1
There is described a method for synthesising a lactone comprising oxidising a compound containing a cyctoalkanone ring in the presence of a molecular sieve, which molecular sieve usually contains a transition metal, an actinide, or both.  
WO/1999/055659A1
The invention relates to a method for producing 1,4-butanediol and possibly $g(g)-butyrolactone and tetrahydrofurane by oxidation of butane or benzol into a product flow containing maleic anhydride, absorption of maleic anhydride from th...  
WO/1999/050204A1
A process for cooxidizing organic compounds which comprises, in the presence of an imide compound such as N-hydroxyphthalimide, oxidizing with molecular oxygen a compound (A) which is selected from among (A1) compounds having nonaromatic...  
WO1999038856A3
A new process for the production of gamma-butyrolactone is described. Starting from maleic and/or succinic anhydride the conversion takes place in the vapour phase in the presence of a Cu/Cr catalyst.  
WO1999035113A3
Process for the production of tetrahydrofuran, gammabutyrolactone and butanediol starting from maleic anhydride esters, consisting of two subsequent hydrogenations.  
WO1999031084A8
Cytotoxic Michael addition derivatives of brefeldin A are described. Oxidation of thiol addition products of brefeldin A provides the corresponding sulfoxides and sulfones. The sulfoxides exhibited more cytotoxic activity than the corres...  
WO/1999/040047A1
The invention relates to methods for preparing macrocyclic products with 9 or more ring atoms by ring-closing diine metathesis of suitable diine substrates. The diine substrates can be converted into cycloakynes or into cycloalkadiines b...  
WO/1999/038856A2
A new process for the production of gamma-butyrolactone is described. Starting from maleic and/or succinic anhydride the conversion takes place in the vapour phase in the presence of a Cu/Cr catalyst.  
WO/1999/035139A1
A new process for the production of gamma-Butyrolactone is described. Starting from maleic and/or succinic anhydride the conversion takes place in the presence of a catalyst composed of copper oxide and zinc oxide.  
WO/1999/035136A1
A process for the production of tetrahydrofuran and gammabutyrolactone from maleic, succinic anhydride or fumaric acid esters, by vapour phase hydrogenation in two subsequent stages, the former on a copper based catalyst, the latter on a...  
WO/1999/035113A2
Process for the production of tetrahydrofuran, gammabutyrolactone and butanediol starting from maleic anhydride esters, consisting of two subsequent hydrogenations.  
WO/1999/033819A1
$g(e)-Caprolactone which less discolors upon heating, has a purity of 99.8 wt.% or higher, and gives under given conditions a gas chromatogram showing that the total concentration of ingredients (low-boiling ingredients) having a retenti...  
WO/1999/031084A1
Cytotoxic Michael addition derivatives of brefeldin A are described. Oxidation of thiol addition products of brefeldin A provides the corresponding sulfoxides and sulfones. The sulfoxides exhibited more cytotoxic activity than the corres...  
WO/1999/025678A1
A process for the production of at least one C¿4? compound selected from 1,4-butanediol, $g(g)-butyrolactone and tetrahydrofuran, in which a solution of maleic anhydride in a high boiling ester is esterified with a C¿1? to C¿4? alcoho...  
WO/1999/025675A1
A process is described for the production of butane-1,4-diol, $g(g)-butyrolactone and/or tetrahydrofuran. A vaporous stream containing maleic anhydride, water, and carbon oxides is contacted in an absorption zone with a high boiling este...  
WO/1999/023086A1
Preparation of 4-hydroxy substituted butyrolactones is described. A process for the preparation of 3-hydroxybutyrolactone, 1,2,4-trihydroxybutane and 3,4-dihydroxy acid methyl ester from malic acid is particularly described. The preparat...  
WO/1998/047891A1
Cyclic products are prepared by selective olefin metathesis of bifunctional or polyfunctional substrates in the presence of one or several homogeneous or heterogeneous metathesis catalysts in a reaction medium. The invention is character...  
WO/1998/041517A1
A process for producing $g(d)-valerolactone derivatives of general formula (II), (wherein R?1� and R?2� are the same and each represents an alkyl group having 1 to 6 carbon atoms) characterized by catalytically dehydrogenating tetrah...  
WO/1998/022454A1
Method for producing $g(d)- and $g(e)-lactones of formula (I), in which the radical R may be the same or different, and stand for hydrogen, optionally substituted aliphatic, cycloaliphatic, aromatic, araliphatic or heterocyclic radicals,...  
WO/1997/043242A1
A process is described for the production of at least one C4 compound selected from butane-1,4-diol, 'gamma'-butyrolactone and tetrahydrofuran, which includes the step of hydrogenation in the vapour phase of a di-(C1 to C4 alkyl) maleate...  
WO/1997/043234A1
A process is described for the production of at least one C4 compound selected from butane-1,4-diol, 'UPSILON'-butyrolactone and tetrahydrofuran, which includes the step of hydrogenation in the vapour phase of maleic anhydride in the pre...  
WO/1997/038156A1
The invention concerns a process for continuously supplying liquid during the boiling of cellulose in a boiler, the liquid which is used in a given process step being able to circulate between at least two containers or tanks (IL1, IL2; ...  
WO/1997/038157A1
The present invention relates to a process for continuously guiding the liquid when digesting pulp in a digester, wherein liquid used in a particular process step can circulate between containers or tanks (IL 1, IL 2; CL1, CL2) arranged ...  
WO/1997/032948A1
Perfuming ingredients comprising at least one macrolide of formula (I) having a double bond in one of the positions indicated by the dotted lines and wherein the symbol R represents a hydrogen atom or a methyl radical, are described. The...  
WO/1997/031883A1
The invention relates to a process for preparing 1,6 hexane diol and 'epsilon'-caprolacton from a carboxylic acid mixture containing adipic acid, 6-hydroxy caproic acid and, in small quantities, 1,4 cyclohexane diols. Said mixture is obt...  
WO/1997/024346A1
The invention relates to a process for the preparation of gamma-butyrolactone by catalytic hydrogenation of maleic acid anhydride, succinic acid anhydride or the acids thereof in the vapour phase in the presence of catalysts based on cop...  
WO/1997/011932A1
An improved process for the production of high yields of 'delta'-lactones and 5-hydroxy fatty acids from unsaturated fatty acids which are free or esterified with glycerol is disclosed. The 'delta'-lactones may be produced by reacting on...  
WO/1997/009051A1
The present invention provides methods for modulating the interaction between neuregulins and neuregulin-specific glycosaminoglycan sequences. The invention identifies compounds that have the ability to mimic a specific neuregulin-glycos...  
WO/1997/007111A1
The invention concerns a process for preparing butyrolactones of general formula (I) in which substituents R1 and R2 stand for hydrogen, alkyl or hydroxyalkyl groups or for aryl and trialkylsilyl groups optionally carrying inert substitu...  
WO/1996/025937A1
A composition of matter comprising at least 15 % by weight of the compound: 8-C-'beta'-D-[2-O-(E)-cinnamoyl]glycopyranosyl-2-[(R)-2-hydr oxy]propyl-7-methoxy-5-methylchromone. This compound, found in very small amounts in leaves of the A...  
WO/1995/022539A1
Disclosed is a process for the production of gamma-butyrolactone from maleic anhydride or succinic anhydride by hydrogenation in the presence of a catalyst composition comprising the mixed oxides of copper, zinc and zirconium.  
WO/1995/014010A1
The invention pertains to a method for preparing 'gamma'-butyrolactone, wherein 2,5-dihydrofuran or 2,3-dihydrofuran or mixtures of these two hydrofurans are reacted in gas phase, in the presence of water and in the presence or absence o...  
WO/1994/029294A1
The present invention relates to a process for producing lactones (1) starting from cyclic ketones which comprises an oxidation reaction which is performed in the presence of an optionally substituted cycloaliphatic peracid or of an opti...  
WO/1994/029258A1
A process for producing an omega-functionalized aliphatic carboxylic acid starting from cyclohexanone and omega-functionalized alpha-olefins or acrylic esters. The process comprises an addition step, an oxidation step, an isomerization s...  
WO/1994/021624A1
A process for the catalysed oxidation of ketones to esters or lactones with hydrogen peroxide in the presence of a carboxylic acid or anhydride solvent is provided. The process employs gamma alumina as a heterogeneous catalyst. In certai...  
WO/1994/012487A1
A process for preparing a lactone of general formula (I), where R is an optionally substituted phenyl group or an optionally substituted mono- or bicyclic heteroaryl radical which process comprises reacting an anion of a malonate of form...  
WO/1994/007887A1
The present invention relates primarily to the field of optically active lactones of formula (I) as defined below. The invention relates also to the utilisation of compounds of formula (I) so obtained as perfuming or flavoring ingredient...  
WO/1994/004161A1
The activity of inhibitors of vacuolar-type H+-ATPases in the inhibition of vacuolation induced by Helicobacter pylori is disclosed. Preferred agents are the macrolide antibiotics bafilomycins A1, A2, B1, B2, C1, C2 and D, especially baf...  
WO/1993/018652A1
Inhibition of renal cancer, melanoma, colon cancer, lung cancer and leukemia cells by administration of compounds from the bafilomycin and hygrolidin groups of compounds.  

Matches 101 - 150 out of 583