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JP3597861B2 |
PCT No. PCT/GB94/00440 Sec. 371 Date Oct. 12, 1995 Sec. 102(e) Date Oct. 12, 1995 PCT Filed Mar. 8, 1994 PCT Pub. No. WO94/21624 PCT Pub. Date Sep. 29, 1994A process for the catalysed oxidation of ketones to esters or lactones with hydro...
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JP2004269490A |
To provide a method for producing a lactone compound with a high optical purity by applying asymmetric Baeyer-Villiger oxidation to a prochiral cyclic ketone at a high enantioselectivity.The method for producing the optical active lacton...
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JP2004526686A |
A method for preparation of alcohols by catalytic hydrogenation of carbonyl compounds with hydrogen or hydrogen-containing gases in the presence of a hydrogenation catalyst of Raney type, where the catalyst is used in the form of hollow ...
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JP2004524265A |
Macrocyclic ester compounds can be prepared from oligoesters by thermal cleavage in the presence of a thermostable benzene derivative.
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JP3553404B2 |
To produce a pure macrocyclic ester or lactone useful in the perfume industry in excellent yield according to a reaction in two steps by forming a linear oligomer from a monomer in the presence of a complex compound of iron and carrying ...
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JP2004203857A |
To provide a production method for α- and β-methyl-γ-butyrolactone(MeGBL) as well as 3-methyltetrahydrofuran (MeTHF).This invention is a production method for MeGBL and/or MeTHF from 3-(hydroxymethyl)-tetrahydrofuran (HOMeTHF), 3-form...
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JP2004517136A |
A process for working up by distillation the crude products obtained in the process according to DE-A 196 07 954 and containing 1,6-hexanediol (HDO), 1,5-pentanediol (PDO) or caprolactone (CLO) in order to obtain the corresponding pure p...
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JP2004143047A |
To provide an economically advantageous method for manufacturing -caprolactone which enables efficient separation of unreacted cyclohexanone from a crude reaction liquid and recovery of -caprolactone of high qualities in a high yield.Thi...
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JP3527706B2 |
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...
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JP2004115514A |
To develope an alternative method for manufacturing an unsaturated and methyl-substituted macrocyclic ketone or lactone which is interest in view of aromatic odor from a corresponding ketolactone or diketone.The new unsaturated and methy...
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JP2004510699A |
The invention is directed to the cross-metathesis and ring-closing metathesis reactions between geminal disubstituted olefins and terminal olefins, wherein the reaction employs a Ruthenium or Osmium metal carbene complex. Specifically, t...
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JPWO2002026725A1 |
Provided is a method for efficiently and easily producing optically active 3-hydroxy-γ-butyrolactone in an industrially advantageous manner. This is a method for producing optically active 3-hydroxy-γ-butyrolactone in which an opticall...
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JP2004018528A |
To provide an improved method of manufacturing 11(12)-pentadecen-15-olide.In the method of manufacturing 11(12)-pentadecen-15-olide by using 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH) as the raw material in the presence of a...
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JP2004002349A |
To provide a method for producing an optically active lactone compound capable of further improving an excess ratio of an enantiomer and a catalyst suitable for method for producing such the lactone compound.The method for producing the ...
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JP3478344B2 |
PURPOSE: To obtain a lactone compound useful as perfumes, medicines and agricultural chemicals or their synthetic intermediates by reacting a cycloalkanone with a peracetic acid in the presence of an acid anhydride in oxidizing the cyclo...
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JP2003535916A |
(57) [Summary] H as a stoichiometric reducing agent2Using the gas and an organometallic ruthenium complex as a catalyst, the ketone and aldehyde are hydrogenated to the corresponding alcohol or alkyl group.
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JP3464219B2 |
PCT No. PCT/EP93/00239 Sec. 371 Date Aug. 8, 1994 Sec. 102(e) Date Aug. 8, 1994 PCT Filed Feb. 3, 1993 PCT Pub. No. WO93/16042 PCT Pub. Date Aug. 19, 1993.The invention relates to a process for producing pyrrolidone and N-alkyl pyrrolido...
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JP2003527390A |
The present invention relates to a process for the Baeyer-Villiger oxidation of organic carbonyl compounds.
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JP3411285B2 |
PCT No. PCT/EP94/03683 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Nov. 9, 1994 PCT Pub. No. WO95/14010 PCT Pub. Date May 26, 1995A process for the preparation of gamma -butyrolactone, in which 2,5-dihydrofuran or ...
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JP2003504034A |
(57) [Summary] Saturated aliphatic carboxylic acid esters and / or correspondence by the use of short chain carboxylic acids and long chain alcohols and the complete or partial removal of water produced and / or added during the reaction...
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JP2003502416A |
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 buytrolactone with an amine. The aminolysis product i...
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JP2002348284A |
To provide a method for producing high-quality 15-pentadecanoride in a high yield. The present invention relates to the method for producing 15- pentadecanoride in which the hydrogenation of 15-pentadecenoride is made with a specific amo...
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JP2002529459A |
A process for production of tetrahydrofuran and gamma butyrolactone by hydrogenation of maleic anhydride recovered from a process of conversion of a n-butane. The process consists essentially of the following steps: A) converting n-butan...
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JP3310056B2 |
PURPOSE: To easily obtain the subject compound in high optical purity at a low cost by the asymmetric hydrogenation of 4-methylene-2-oxetanone in the presence of a ruthenium-optically active phosphine complex as a catalyst. CONSTITUTION:...
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JP2002517388A |
Process for producing butyrolactones of the general formula Iwhere R1 and R2 are each hydrogen, alkyl, hydroxyalkyl, substituted or unsubstituted aryl or substituted or unsubstituted trialkylsilyl, by reacting alkynes of the general form...
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JP2002145873A |
To provide a method for the catalytic production of γ-butyrolactone.A γ-butyrolatone of general formula (R1 and R2 are each a substituent of the butyrolactone) is produced by the catalytic reaction of an olefin of general formula R1CHC...
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JP2002514572A |
The invention relates to tyrosine kinase inhibitors of the bis-indolyl compound type of the general formula I:pharmaceuticals containing them and their use for the treatment of malignant and other diseases based on pathological cell prol...
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JP3281125B2 |
PURPOSE: To provide a catalyst system improved in selectivity and reaction speed at the time of carbonylation of epoxides by reaction with carbon monoxide. CONSTITUTION: Carbon monoxide and an epoxide are allowed to react with each other...
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JP2002512996A |
A process for preparing 1,4-butanediol and, if desired, gamma-butyrolactone and THF by oxidizing butane or benzene to form a product stream including maleic anhydride, absorbing maleic anhydride from the product stream with a high-boilin...
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JP3274866B2 |
PCT No. PCT/GB93/02427 Sec. 371 Date May 16, 1995 Sec. 102(e) Date May 16, 1995 PCT Filed Nov. 25, 1993 PCT Pub. No. WO94/12487 PCT Pub. Date Jun. 9, 1994This appliciation discloses a process for preparing a lactone of general formula (I...
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JP2002105003A |
To provide a dialkyne compound used as a new, stable liquid crystal compound, having such a specific low optical anisotropy (Δn) and a negative or positive dielectric anisotropy (Δ) as to be suitably used as a liquid crystal medium, es...
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JP2002502832A |
The present invention relates to methods for preparing macrocyclic products having 9 or more ring atoms by ring-closing diyne metathesis of suitable diyne substrates. The diyne substrates can be converted into cycloalkynes or into cycloa...
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JP2002501913A |
A process for the production of gamma-butyrolactone. Starting from maleic and/or succinic anhydride the conversion takes place in the vapor phase of a Cu/Cr catalyst.
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JP2002500221A |
A process for the production of gamma-butyrolactone. Starting from maleic and/or succinic anhydride the conversion takes place in the presence of a catalyst composed of copper oxide and zinc oxide.
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JP3227030B2 |
PURPOSE: To readily synthesize invictolide, i.e., one component of queen- recognition pheromone through a few processes by using diethyl methylmalonate and methacrolein as the starting substances. CONSTITUTION: Diethyl methylmalonate of ...
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JP2001521483A |
(57) [Summary] To produce 9-deazaguanine derivatives, aldehydes or ketones are reacted with dialkylaminomalonates to form the corresponding enamines. This enamine is then reacted with a base to form cyclic pyrrole. The cyclic pyrrole is ...
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JP2001516366A |
Process for the production of tetrahydrofuran, gammabutyrolactone and butanediol starting from maleic anhydride esters, consisting of two subsequent hydrogenations.
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JP2001515519A |
A two-stage process for producing tetrahydrofuran and gammabutyrolactone in varying proportions from maleic, succinic anhydride or fumaric acid esters, by vapor phase hydrogenation. The first stage occurs on a copper-based catalyst to pr...
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JP2001246254A |
To produce a novel palladium-rhenium catalyst having rhenium extremely uniformly distributed and carried on a coal, coconut or peat type activated carbon as a carrier and having a good hydrogenation capability for dicarboxylic acids and ...
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JP3191337B2 |
PURPOSE: To inexpensively obtain the title compounds in reduced production of aryl formate, high selectivity and high yield by carrying out a co-oxidation reaction of cyclic ketones and aromatic aldehyde in specific ranges of molar ratio...
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JP2001507409A |
The present invention relates to a process for continuously guiding a liquid when digesting pulp in a digester, wherein liquid used in a process step can circulate between containers or tanks arranged at the inflow and outflow side of th...
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JP3132532B2 |
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JP3095293B2 |
PURPOSE: To provide a process for producing γ-butyrolactone in high efficiency at a low cost while enabling the recycled use of unreacted substance. CONSTITUTION: γ-Butyrolactone is produced by the vapor-phase catalytic dehydrogenation...
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JP2000256342A |
To obtain a corresponding ester or lactone in high yield from a ketone using hydrogen peroxide. This ester or lactone of formula II (Ra and Rb are each an organic group having a carbon atom at the binding site to the ad-jacent carbonyl c...
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JP3089040B2 |
A therapeutic agent for alleviating disorders caused by nerve cell degeneration in the brain which contains a cyclopropachromen derivative represented by the following general formula (I): wherein n is an integer of from 2 to 5; the carb...
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JP3085497B2 |
A pyran derivative has a structure of R<2>R<3>C=(C5H2R<1>O)-(CH=CH)n-C6H2R<6>R<7>-NR<4>R<5> wherein n is 3 or 4; R<1> is a proton, alkyl or phenyl group; each of R<2> and R<3> is independently a cyano, alkoxycarbonyl having an alkyl, acy...
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JP2000510879A |
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...
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JP2000502685A |
PCT No. PCT/EP96/05486 Sec. 371 Date Apr. 13, 1998 Sec. 102(e) Date Apr. 13, 1998 PCT Filed Dec. 7, 1996 PCT Pub. No. WO97/24346 PCT Pub. Date Jul. 10, 1997A process for manufacturing gamma-butyrolactone by the catalytic hydrogenation of...
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JPH11293284A |
To produe high-purity cis-isoambrettolide by macrolactonizing cis-16- hydroxy-9-hexadecenoic acid or its ester. A (non)esterified trans-16-hydroxy-9-hexadecenoic acid of formula I (wherein R1 is H or acetyl; and R2 is H or methyl) is tra...
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JPH11279172A |
To obtain a lactone simply, advantageously and technically easily by introducing a specific hydroxycarboxylic acid into a specific solvent under a specific condition, isolating by a distillation and then condensing. This method for produ...
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