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JP4934025B2 |
The invention relates to a process for preparing saturated or unsaturated lactones. This process involves reacting a bicyclic compound or a monocyclic compound with hydrogen peroxide in the presence of a first acid having a pKa of 3 or l...
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JP4933011B2 |
A process is described for the co-production of maleic anhydride and at least one C4 compound selected from butane-1,4-diol, gamma -butyrolactone, and tetrahydrofuran in which maleic anhydride is produced by partial oxidation of a C4 hyd...
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JP4933037B2 |
A process is described for the co-production of maleic anhydride and at least one C4 compound selected from butane-1,4-diol, gamma -butyrolactone, and tetrahydrofuran in which maleic anhydride is produced by partial oxidation of a C4 hyd...
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JP4892152B2 |
A process is described for the co-production of a diol product (e.g. butane-1,4-diol) and a cyclic ether (e.g. tetrahydrofuran) by hydrogenation of an aliphatic diester or lactone feedstock, such as dimethyl or diethyl maleate, which con...
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JP4832306B2 |
Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH), wherein 13-oxabicyclo[10.4.0]hexadec-1(12)-ene (DDP) and hydrogen peroxide are reacted in a diluent in the presence of a strong acid, the diluent has...
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JP4800927B2 |
The present invention relates to a process for the oxidation, in an inert solvent, of a non-aromatic or non-enonic ethylenic bond or of a non-conjugated cyclic ketones into the corresponding epoxides, respectively lactone, using H2O2 as ...
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JP4741776B2 |
Applicants have developed a process for the oxidation of ketones to esters. The process involves contacting the ketone with hydrogen peroxide and a catalyst at oxidation conditions. The catalyst is a molecular sieve represented by the em...
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JP2011105762A |
To provide a method for preparing 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH).The method for preparing 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH) includes reacting 13-oxabicyclo[10.4.0]hexadec-1(12)-ene (DDP) wit...
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JP2011074076A |
To mediate the catalyst activity of a catalyst system used for carbonylation of epoxides by modifying a cation thereof, and to provide a new approach by the use of a cationic Lewis acid as a cation in the catalyst system.Epoxides, azirid...
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JP4648327B2 |
A homogeneous process for the hydrogenation of dicarboxylic acids and/or anhydrides in the presence of a catalyst comprising: (a) ruthenium, rhodium, iron, osmium or palladium; and (b) an organic phosphine; wherein the hydrogenation is c...
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JP4634797B2 |
Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprising a) at least one carbonylation catalyst A comprising uncharged or anionic transition metal complexes of metals of groups 5 to 11 of the Period...
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JP4625470B2 |
The invention relates to a catalyst provided in the form of an extrudate, which contains 5 to 85% by weight of copper oxide and comprises, in the active material and as binders, the same oxidic carrier material. The invention also relate...
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JP4608318B2 |
A supported rhenium containing catalyst (I) contains a further metal from Group 8 or 1b, preferably ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os,) iridium (Ir), platinum (Pt), copper (Cu), silver (Ag) or cobalt (Co) in the fo...
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JP4608216B2 |
A method for producing lactones, which comprises reacting an amide compound of Formula (I): Äwherein X represents a halogen atom; R, R' and R1 to R6 each independently represents a hydrogen atom or any desired substituent; and n represe...
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JP4555475B2 |
In a process for preparing 1,4-butanediol, tetrahydrofuran and gamma-butyrolactone by oxidation of butane to give a product stream comprising maleic anhydride, absorption of maleic anhydride from the product stream using a high-boiling a...
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JP4533469B2 |
The present invention relates to a process for the production of esters or lactones, and to a process for the production of peroxides.
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JP4469606B2 |
Alkylketene dimers are prepared by reacting acyl chlorides with tertiary amines in a molar ratio of from 1:1 to 1:1.6 at from 65 to 150° C. and with a residence time of from 1 to 30 minutes in the absence of solvents with thorough mixin...
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JP4390394B2 |
(A) A compound capable of forming a stable radical and selected from (A1) oxygen-atom-containing compounds each having a carbon-hydrogen bond at the adjacent position to an oxygen atom, (A2) carbonyl-group-containing compounds, and (A3) ...
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JP4323271B2 |
A valerolactone compound represented by the formula (I): wherein each of R<1> and R<2> is independently a hydrogen atom, a methyl group or an ethyl group wherein when R<1> is a hydrogen atom, R<2> is not a hydrogen atom; and wherein when...
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JP4268335B2 |
A process is described for the production of butane-1,4-diol, gamma-butyrolactone and/or tetrahydrofuran. A vaporous stream containing maleic anhydride, water, and carbon oxides is contact in an absorption zone with a high boiling ester ...
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JP4205857B2 |
A process for the production of at least one C4 compound selected from 1,4-butanediol, gamma-butyrolactone and tetrahydrofuran, in which a solution of maleic anhydride in a high boiling ester is esterified with a C1 to C4 alcohol to form...
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JP4177252B2 |
A catalyst (I) for the gas phase hydrogenation of 4C-dicarboxylic acids and/or derivatives, preferably maleic acid anhydride, comprises copper oxide (20-94 wt.%), palladium and/or a palladium compound (0.005-5 wt.%) and an oxide support ...
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JP4149808B2 |
A hydrogenation catalyst which is suitable, in particular, for the hydrogenation of maleic anhydride and its derivatives to THF or its derivatives comprises copper oxide and at least one further metal or compound thereof, preferably an o...
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JP4152460B2 |
Gas phase dehydration of butan-1,4-diol (I) to gamma -butyrolactone (II) is carried out in the presence of a catalyst (III) containing copper (Cu), which contains 4-40 wt.% Cu and 0-5 wt.% sodium oxide (Na2O) on a support of 80-100 wt.% ...
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JP4130361B2 |
A catalyst for the hydrogenation of C4-dicarboxylic acids and/or their derivatives, preferably maleic anhydride, in the gas phase comprises from 5 to 100% by weight, preferably from 40 to 90% by weight, of copper oxide and from 0 to 95% ...
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JP4123525B2 |
PCT No. PCT/EP95/00589 Sec. 371 Date Feb. 20, 1997 Sec. 102(e) Date Feb. 20, 1997 PCT Filed Feb. 17, 1995 PCT Pub. No. WO95/22539 PCT Pub. Date Aug. 24, 1995Disclosed is a process for the production of gamma-butyrolactone from maleic anh...
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JP4107396B2 |
PCT No. PCT/EP97/00990 Sec. 371 Date Aug. 28, 1998 Sec. 102(e) Date Aug. 28, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31883 PCT Pub. Date Sep. 4, 19971,6-hexanediol and epsilon -caprolactone are prepared from a carboxylic acid mixt...
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JP4080026B2 |
An ether is oxidized with oxygen under an oxidation catalyst comprising an imide compound (such as N-hydroxyphthalimide) or the imide compound and a co-catalyst to produce the corresponding chain or cyclic ester or anhydride. The co-cata...
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JP4065573B2 |
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...
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JP4038282B2 |
Oxacycloalkan-2-ones and oxacycloalken-2-ones (IA) are new. Oxacycloalkan-2-ones and oxacycloalken-2-ones (IA) of formula (I), with specified exceptions, are new; dotted line = optional additional bond; X, Y = methylene or 2-12 carbon (C...
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JP4021490B2 |
PCT No. PCT/GB97/01286 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 12, 1997 PCT Pub. No. WO97/43234 PCT Pub. Date Nov. 20, 1997A process is described for the production of at least one C4 compound selected fr...
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JP4021489B2 |
PCT No. PCT/GB97/01285 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 12, 1997 PCT Pub. No. WO97/43242 PCT Pub. Date Nov. 20, 1997A process for the production of at least one C4 compound selected from butane-1,4...
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JP3970673B2 |
To provide a monomer with a polycyclic structure that has an alkenyl ether as a basic structure, a photosensitive polymer as a polymer product therefrom, and a resist composition comprising the polymer. This photosensitive polymer has a ...
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JP3928690B2 |
To provide a new lactone compound which polymerizes and gives a high energy beam sensitive resist material excellent in sensitivity, resolution, etching resistance, useful for microprocessing by an electron beam and far ultraviolet ray, ...
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JP3919268B2 |
To obtain the subject new complex comprising a specific ruthenium- iodine-optically active phosphine complex and useful as a catalyst for various organic synthetic reactions having a high catalyst activity and high asymmetric yield and u...
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JP3850637B2 |
To provide a method for producing a macrocyclic lactone in high yield and high productivity. This method for producing a macrocyclic lactone comprises subjecting a hydroxycarboxylic acid ester represented by a formula (1) to intramolecul...
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JP2006524728A |
Equation (1) [In equation, R1Are hydrogen, hydroxy, halogen, nitro, cyano, amino, carboxy, carboxylic acid ester, sulfo, sulfonic acid ester, carboxylic acid amide, sulfonic acid amide, alkoxy, aryloxy, alkylthio or arylthio, and X is -O...
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JP2006524213A |
The present invention pertains to a process for the carbonylation of an epoxide by reacting it with carbon monoxide in the presence of a catalyst system containing two components, wherein the first component is a source of one or more me...
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JP3817479B2 |
An improved process for the preparation of 3,4-dihydroxybutanoic acid (1) and salts thereof from a D- or L-hexose source is described. The process uses an alkali metal or alkaline earth metal hydroxide and peroxide oxidizing agent to con...
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JP2006517538A |
9-substituted keto-spinosyn derivatives (I) and their salts are new. 9-substituted keto-spinosyn derivatives of formula (I) and their salts are new. X = oxygen, NH or NR4; R1 = hydrogen or an amino sugar; R2 = hydrogen or, all optionally...
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JP2006511486A |
The invetion relates to compounds of formula (I) wherein R1, R2, R3, R4, R5, R6, R7 and R8 are as defined in the description, their use as medicament, pharmaceutical compositions containing them and processes for their preparation.
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JP3763738B2 |
To provide a catalyst for economically producing lactones, which is long in service life and high in selectivity coefficient of a reaction product, and to provide a method for producing lactones efficiently by using the catalyst. This ca...
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JP2006505529A |
A process for preparing functionalized gamma-butyrolactones 3 and various biologically active compounds using mucohalic acid 1 and halide 2 in the presence of indium is disclosed, wherein X, Y, R1, R2, and R3 may have any of the meanings...
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JPWO2004033702A1 |
The present invention is a drug for fungal diseases caused by so-called fungal infections such as molds and yeasts, and uses microorganisms belonging to the genus Streptomyces and capable of producing K99-5278A substance, K99-5278B subst...
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JP2005535669A |
The present invention relates to novel macrocycles of the general formula (I) and to the use thereof in the treatment of cancer diseases.
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JP2005521740A |
The present invention provides a process for selectively converting dihydroxy-or polyhydroxy alcohols into carbonyl compounds which process comprises the step of oxidizing the dihydroxy-or polyhydroxy alcohols with dioxygen (O2) as oxida...
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JP2005194282A |
To provide an improved process for preparing 3,4-diyhdroxybutanoic acid applicable to prepare 3,4-dihydroxybutanoic acid-γ-lactone and 2(5H) furanone, particularly, stereoisomers thereof, which are useful as chemical intermediates to na...
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JP2005515267A |
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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JP3640565B2 |
To obtain a novel ruthenium-optically active phosphine complex mix ture useful as a catalyst for organic synthesis and an asymmetric hydrogenation catalyst useful for the production of optically active 4-methyl-2-oxycetanone. A ruthenium...
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JP2005500987A |
A process for producing 5-methylbutyrolactone from levulinic acid utilizing an optionally supported metal catalyst is described. The catalyst has both a hydrogenation and a ring-closing function.
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