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JPH0519558B2 |
NEW MATERIAL:The compound of formula I (R1 is >=3C alkylene; R2 is alkylene). EXAMPLE:The compound of formula II. USE:A thermosetting compound or molding material having low shrinkage or free from shrinkage. It has moderate viscosity sui...
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JPH0538427A |
PURPOSE: To obtain a storage-stable aq. alkyl diketene emulsion at a high conc. by using a protective colloid and a specified ester or urethane as stabilizers for preparation of a 14-22C alkyldiketene emulsion. CONSTITUTION: As essential...
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JPH04338384A |
PURPOSE: To obtain 15-pentadecanolide or a mixture of 15-pentadecanolide with 15-pentadec-11(12)-enolide imparting aromatic characteristics to a perfume compsn., etc., by heat-treating bis-(13-oxabicyclo[10,4,0]hexadec-12-yl) peroxide in...
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JPH04505321A |
A method for converting 1,4 and 1,5 aliphatic saturated diols to lactones is disclosed wherein the diol is reacted with a chemical oxidizing agent and a ruthenium containing catalyst at temperatures substantially less than 200 DEG C. The...
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JPH0456014B2 |
A process for the preparation of carboxylic acids, alcohols, aldehydes or the secondary products thereof which comprises reacting an alcohol having from one to about twenty carbon atoms with hydrogen and carbon monoxide in the presence o...
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JPH0447647B2 |
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JPH0446955B2 |
Novel ethers of organic compounds containing chiral atoms of the formula I wherein A is a hydrocarbonated chain of 1 to 10 groups, the said chain containing one or more heteroatoms, one or more unsaturations, the assembly of the groups c...
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JPH04154775A |
PURPOSE: To obtain trans-3,4-disubstituted γ-lactone compounds having a high optical purity in simple steps by using levoglucosenone as a starting substance and forming a lactone ring using the Baeyer-Villiger oxidative reaction. CONSTI...
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JPH04500813A |
Carboxylic acid esters are produced from the corresponding C2 to C12 carboxylic acids or anhydrides by hydrogenation at elevated temperature, in the presence of a catalyst comprising (a) an alloy of a Group VIII noble metal and (b) an ox...
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JPH044314B2 |
Novel ethers of organic compounds containing chiral atoms of the formula I wherein A is a hydrocarbonated chain of 1 to 10 groups, the said chain containing one or more heteroatoms, one or more unsaturations, the assembly of the groups c...
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JPH0363537B2 |
A process for asymmetrically hydrogenating through the use of microorganisms a double bond connected to tertiary carbon atom in an olefinic aliphatic compound to produce a tertiary, optically active aliphatic compound useful as an interm...
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JPH03215464A |
NEW MATERIAL: A compound of formula I [R is each substitutable alkyl, cycloalkyl, aryl, heterocyclyl; X is N, CH]. EXAMPLE: (As a mixture of the isomers), 3-(3,4dichlorobenzyloximino)2- methoxymethylidene methylbutylate. USE: A pesticide...
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JPH0357905B2 |
The preparation of 5-alkyl-butyrolactones is described using C8 hydrocarbon levulinate esters, with side-chain alkyl substituents of up to 4 carbon atoms as starting material, with the reaction being conducted with hydrogen at a temperat...
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JPH03184943A |
PURPOSE: To provide a cerebrovascular agent for treatment of neurodegenerative disorders including cerebrovascular diseases, comprising a polycyclic amine such as aminomethylhexahydrophenanthrene. CONSTITUTION: A compound of the formula ...
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JPH03130276A |
PURPOSE: To obtain an α-alkyl lactone effective as an aromatic chemical substance, by reacting acyl lactone, aldehyde and alkali metal hydroxide, and then hydrating the same. CONSTITUTION: The equimolar ratio of an α-acyl lactone of fo...
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JPH0333718B2 |
1. Process for manufacture of epsilon-caprolactone by oxydation of cyclohexanone, by means of a crude solution of C2 -C4 -percarboxylic acid resulting from the reaction of hydrogen peroxide on the corresponding carboxylic acid in the pre...
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JPH0326340A |
PURPOSE: To prepare a hydrogenation catalyst for maleic anhydride to tetrahydrofuran and γ-butyrolactone by depositing catalyticaily active oxide material expressed by a specified formula on a porous and inert support. CONSTITUTION: A s...
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JPH02273668A |
PURPOSE: To simply obtain the subject compd. from an easily obtainable raw material by an α-acyl lactone, an aldehyde and an alkali metal hydroxide in an essentially equimolar ratio in an inert diluent at specific temp. while removing w...
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JPH02273667A |
PURPOSE: To advantagenously obtain the subject compd. by reacting α-acyl lactone, aldehyde and alkali metal hydroxide in an essentially equimolar ratio in an inert diluent at specific temp. while removing water and hydrogenating the rea...
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JPH02174685A |
PURPOSE: To effectively produce an optically active γ-lactone by bringing a vegetable oil, a hydrolysis product thereof or ricinolic acid into contact with a growing medium of specific microorganisms such as Aspergillus-niger. CONSTITUT...
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JPH0219831B2 |
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JPH0219832B2 |
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JPH0219830B2 |
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JPH0219113B2 |
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JPH0276591A |
PURPOSE: To obtain a chiral hydroxycarboxylic acid having an extremely deviated enantiomerism by oxidizing a prochiral diol in the presence of a catalyst derived from Corynebacterium oxydans. CONSTITUTION: A prochiral diol is dissolved i...
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JPH0211582A |
PURPOSE: To obtain a lactone useful as a solvent and an intermediate with high selectivity without forming a byproduct by reacting a specific (substituted) alkenol and carbon monoxide-containing gas by using a specific catalyst. CONSTITU...
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JPH021840B2 |
C-20 modified derivatives of tylosin and tylosin-like macrolides useful as antibiotics and as intermediates to other antibiotics.
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JPH021833B2 |
This invention relates to a process for the preparation of stable solutions of epsilon -caprolactone by means of the oxidation of cyclohexanone by a percarboxylic acid containing 2 to 4 carbon atoms. According to the invention, the perca...
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JPH0148907B2 |
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JPH0142246B2 |
A therapeutic agent for the treatment of cardiovascular diseases which contains as the effective component at least one compound selected from the group consisting of 5-hydroxydecanoic acid, a salt thereof, an ester thereof and delta -de...
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JPH0135814B2 |
A process for the production of carboxyl compounds such as caprolactones, in which the corresponding carbonyl compounds are oxidized with hydrogen peroxide in the presence of a catalyst in a substantially anhydrous liquid medium. The wat...
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JPS6490135A |
PURPOSE: To obtain the subject substance by bringing a prochiral olefinic compd. and water or alcoholic compd. and CO into reaction in the presence of a protonic acid exclusive of nitric acid, the independent enantiomer of an optically a...
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JPH01500753A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPH0114280B2 |
A perfumery composition consisting essentially of from 1% to 50% by weight of a trimethyl-tetrahydropyran-2-one selected from the group consisting of (1) 4,6,6-trimethyl-tetrahydropyran-2-one of the formula (2) 4,4,6-trimethyl-tetrahydro...
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JPS63310883A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS63258866A |
Process for the reduction of the ketene trimer portion in raw diketene by mixing of the diketene with water, an alcohol, a phenol or a carboxylic acid, and heating the mixture to 50 DEG to 130 DEG C., and then distilling off the diketene.
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JPS6393773A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6312851B2 |
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JPS6310705B2 |
Certain dialkyl delta-lactones are disclosed to be useful as perfumery ingredients.
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JPS6225667B2 |
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JPS6220538B2 |
Photographic recording material comprising one or more blocked photographically useful compounds. The blocked compounds are photographic image dyes and photographic reagents. These compounds are blocked with a group which, under alkaline...
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JPS6284076A |
A method for synthesizing a wide variety of bicyclic lactones, as represented generally by the following structures (la) and (lb)wherein A= represents the group,which has had an additional hydrogen atom removed from a ring-carbon to form...
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JPS625123B2 |
New lactones having the formula (I) wherein the cyclohexyl radical is bound to the carbon atoms at position 3 or 4 as indicated by the dotted lines, their use as perfuming ingredients and process for their preparation.
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JPS61218549A |
The invention relates to a process for the preparation of 2-alkyl-cyclopent-2-enones of formula by the following steps. 1) An alpha -olefin of formula CH2=CH-CH2R is oxidized to the corresponding epoxide. 2) The epoxide is reacted with a...
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JPS6141894B2 |
Novel odorants of the formula: NOVEL ODORANTS OF THE FORMULA: (I) where one of the R's is a hydrogen atom and the other is a methyl group and R1 is either the 1- or 2- isobutenyl group.
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JPS61178975A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6129350B2 |
gamma -Butyrolactone is manufactured by hydrogenating maleic anhydride in the presence of butyrolactone as the solvent. The hydrogenated reaction mixture, which contains butyrolactone, succinic anhydride and succinic acid, is fractionate...
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JPS6121474B2 |
Process for the preparation of cyclopentadecanolide comprising the steps of converting 13-oxa-bicyclo [10.4.0]-hexadecene-[1(12)] to a lactone of the formula wherein X is an oxygen atom, =NOH or =N-NH2, reducing said lactone to give 15-h...
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JPS6121208B2 |
Process for the catalytic hydrogenolysis of maleic anhydride to give 1,4-butanediol and tetrahydrofuran in a single-stage operation by means of hydrogen under heat and pressure, in the presence of a suspension of a reduced solid catalyst...
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JPS6193174A |
Lactones are produced by reacting an unsaturated alcohol capable of intramolecular esterification to form a. lactone ring with carbon monoxide in the presence of a protonic acid and a catalyst comprising (a) at least one of the metals pa...
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