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| Number | Title | Issue Date |
| 7060859 | Use of a solid hydrotalcite structure incorporating fluorides for basic catalysis of Michael or Knoevenagel reactions The invention concerns the use of a solid basic catalyst comprising a hydrotalcite structure wherein part at least of the compensating anions are fluoride anions F− for producing Knoevenagel of Michael condensation reactions. The invention also concerns... | 06/13/2006 |
| 7030280 | Process for producing optically active β-trifluoromethyl-β-hydroxycarbonyl compound The present invention provides a process for producing an optically active β-trifluoromethyl-β-hydroxycarbonyl compound represented by formula (3): comprising a step of reacting a fluoral equivalent represented by for... | 04/18/2006 |
| 7005551 | Acetaldehyde process A process is provided for the production of acetaldehyde from formaldehyde and methyl chloride. In the process formaldehyde is reacted in the vapor phase with methyl chloride to produce acetaldehyde and hydrogen chloride. The byproduct hydrogen chloride may be recov... | 02/28/2006 |
| 6969776 | Process for producing fluorinated ketone The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow... | 11/29/2005 |
| 6933413 | Processes for preparation of hexafluoroacetone and its hydrate The present invention provides a process for the preparation of hexafluoroacetone characterized by bringing hexafluoro-1,2-epoxypropane into contact with at least one catalyst selected from the group consisting of titanium oxide catalysts and fluorinated titanium ox... | 08/23/2005 |
| 6933414 | Acetone process A process is provided for the production of acetone from formaldehyde and methyl chloride. In the process formaldehyde is reacted in the vapor phase with methyl chloride to produce acetone and hydrogen chloride. Acetaldehyde may be formed as an intermediate in the r... | 08/23/2005 |
| 6803488 | Process for producing fluorinated ketone The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow... | 10/12/2004 |
| 6455728 | Direct fluorination process for preparing high purity 2-fluoro-1,3-dicarbonyl compounds using oxygen as a radical scavenger A process for fluorinating ଲ-dicarbonyls to form the corresponding -fluorinated-ଲ-dicarbonyl compounds is provided. The process is represented by the following reaction scheme: ##STR1## where R1 is H, alkyl or alkoxy, R2... | 09/24/2002 |
| 6307105 | High purity preparation of fluorinated 1,3-dicarbonyls using BDM (bis-fluroxy difluoromethane) A process for providing an -fluorinated-ଲ-dicarbonyl includes electrophilically fluorinating a ଲ-dicarbonyl with bis-fluoroxydifluoromethane in the presence of an acid to provide the -monofluorinated-ଲ-dicarbonyl. The acid ... | 10/23/2001 |
| 6300522 | Process for the preparation of 2-hydroxyalkyl halophenones A process is provided for the preparation of compounds of Formula (1): ##STR1## wherein X1 and X2 are each independently H, Cl or F, provided that at least one of X1 and X2 is Cl or F; one of R1 and R... | 10/09/2001 |
| 6288281 | Direct carbonylation of paraffins using an ionic liquid catalyst A process for the carbonylation of saturated hydrocarbons to give an oxygenated saturated hydrocarbon is disclosed and claimed. The process involves using an acidic ionic liquid catalyst to catalyze the carbon monoxide addition to the saturated hydrocarbo... | 09/11/2001 |
| 6252120 | Process for the preparation of 2,4,4,7-tetramethyl-oct-6-en-3-one and its use as an aroma substance 2,4,4,7-Tetramethyl-oct-6-en-3-one, as a perfume component, imparts new smell facets to perfume compositions. It can be prepared in a good yield by prenylation of 1-chloro-3-methyl-2-butene in a 2-phase process.... | 06/26/2001 |
| 6225506 | Synthesis of alkene-2-ones A method for synthesizing an alkyl-2-one by reacting a 2-alkene halide with a 2,4-alkanedione in an alkylene glycol medium having a boiling point higher than said alkene-2-one is described.... | 05/01/2001 |
| 6121500 | Production of 6-bromo-2-naphthol and derivatives A mixture of water and a glycol, such as ethylene glycol, is employed as the solvent for the reaction between 1,6-dibromo-2-naphthol and an alkali metal sulfite in the preparation of 6-bromo-2-naphthol and its derivatives to effect a substantial reduction... | 09/19/2000 |
| 6020502 | Preparation of fluorinated dicarbonyls A method for the fluorination of 1,3-diketones and 1,3-ketoesters is disclosed.... | 02/01/2000 |
| 5786515 | Synthesis of -chloro or fluoro ketones A simple, high yielding synthesis of a-chloro ketones is described, involving acylation of Grignard and organolithium reagents with N-methoxy-N-methylchloroacetamide. The efficiency of the process is further enhanced by recycling N,O-dimethylhydroxylamine... | 07/28/1998 |
| 5736274 | Conjugated N-fluoropyridinium salt-containing polymer and use of the same A polymer containing a recurring unit of a conjugated N-fluoropyridinium salt and an active material for a positive electrode, an electrolyte, a battery material for the positive electrode and a battery which use such a polymer. That polymer provides a ba... | 04/07/1998 |
| 5703248 | Process for the selective trihalogenation of ketones useful as intermediates in the synthesis of thiophenes The present invention concerns a novel process for the selective trihalogenation of ketones employing organic halogen salts.... | 12/30/1997 |
| 5569778 | Process for preparing fluorine-containing dicarbonyl compound A process for preparing a fluorine-containing dicarbonyl compound of the formula: R1 COCFR2 COR3 in which R1 is a hydrogen atom, or a substituted or unsubstituted alkyl or aryl group; R2 is a hydrogen... | 10/29/1996 |
| 5449801 | Reactive distillation process for free radical halogenation A process for the selective high yield halogenation R--CH3 wherein R is ##STR1## Si(Cl)m (CH3)n, wherein m is 1 to 3, n is 1 to 3 and m+n is 3; phenyl; or phenyl substituted with Cl, Br, F, OR1, ... | 09/12/1995 |
| 5391811 | Process for the preparation of -fluoro-ଲ-dicarbonyl compounds -fluoro-ଲ-dicarbonyl compounds are prepared by reacting a halogenated dicarbonyl compound at temperatures of 20° to 100° C. with an addition product of hydrogen fluoride and a trialkylamine. This process is easy to carry out in technical te... | 02/21/1995 |
| 5231232 | Method of preparing C-18 ketones used in the manufacture of Vitamins E and K Methods of forming unsaturated C-18 ketones which can be used in the synthesis of Vitamins E and K1 are disclosed. One procedure involves coupling a C-9 primary allylic halide to a carbonyl-group-containing C-9 terminal alkyne. A second, two-st... | 07/27/1993 |
| 5124486 | Process for the preparation of cyclic ketones The invention provides a process for the preparation of cyclic ketones of the general formula ##STR1## in which R represents an optionally substituted alkyl or cycloalkyl group and R1 and R2 independently represent an optionally... | 06/23/1992 |
| 4992577 | Preparation of 3-vinyl-substituted 2,2-dimethylcyclopropane-1-carboxylic acids and esters and intermediates therefor A process for preparing a compound of the formula ##STR1## in which Y is halogen, alkyl or cycloalkyl optionally substituted by halogen or C1-4 -alkoxy, alkenyl optionally substituted by halogen, aryl, heteroaryl or alkoxycarbonyl, X is hy... | 02/12/1991 |
| 4740612 | Process for production of ଲ-dihalogenoethenylcyclopropane derivatives A novel process for producing a ଲ-dihalogenoethenylcyclopropane derivative of the formula, ##STR1## wherein R1 is a hydrogen atom or an alkyl group, R3 is a hydrogen atom, lower alkyl, acyl, carboxyl or alkoxycarbonyl grou... | 04/26/1988 |
| 4734524 | Synthetic pheromone 8-methyl-2-decanol propanoate A pheromonal compound produced by the western corn rootworm has been identified as 8-methyl-2-decanol propanoate (8-M-2-DP) having the structural formula: ##STR1## A synthesis has been devised for racemic 8-M-2-DP which demonstrates activity tow... | 03/29/1988 |
| 4686291 | Preparation of methyl ketones A process for the preparation of a methyl ketone of the formula ##STR1## in which R1 is alkyl, alkenyl, alkinyl, optionally substituted aryl or optionally substituted heteroaryl, R2 is alkyl, R3 is alkyl or R2 a... | 08/11/1987 |
| 4642385 | Preparation of monochloropinacolone In the reaction of pinacolone with chlorine in a solvent to produce monochloropinacolone, the improvement which comprises employing a solvent such as an alcohol which contains HCl at the outset of the reaction whereby the amount of by-product dichloropina... | 02/10/1987 |
| 4602117 | Process for the preparation of halogenated 3,3-dimethyl-5-hexen-2-ones A process for the preparation of halogenated 3,3-dimethyl-5-hexen-2-ones of the formula ##STR1## wherein an acetic acid ester of the formula ##STR2## is reacted with 2-methylbutan-3-one of the formula ##STR3##... | 07/22/1986 |
| 4579974 | Catalytic process for the preparation of hexafluoroacetone Disclosed is a continuous catalytic process for the preparation of hexafluoroacetone comprising reacting in a first fluorination step a mixture of hydrofluoric acid and a chlorofluoroacetones recyclate, then in a second fluorination step, a mixture contai... | 04/01/1986 |
| 4524221 | Process for the production of acyloins Process for the production of an acyloin comprising the steps of: A. reacting a Grignard reagent with silylated cyanohydrin, B. treating the reaction product of step A with aqueous acid, and C. recovering the resulting acyloin. Acyloins thus formed are useful as photoin... | 06/18/1985 |
| 4465863 | Branched C13 -alk-1-en-5-ones, use thereof in perfumery, process for preparing same and intermediates used in said process Described are compounds defined according to the structure: ##STR1## wherein R3, R4, R5, R6 and R7 represent hydrogen or methyl with the provisos that: (i) the sum total of carbon atoms in R3 | 08/14/1984 |
| 4460793 | Preparation of monochloromethyl ketones A process for the production of a monochloromethyl ketone of the formula ##STR1## in which R1, R2 and R3 each independently is a hydrogen atom or an optionally substituted alkyl, alkenyl, alkinyl or aryl radical, or R... | 07/17/1984 |
| 4439623 | Process for the preparation of monochloroacetone There is disclosed an improved process for the preparation of monochloroacetone by reacting acetone and chlorine in a vapor-liquid phase reactor and passing the reactor effluent through a fractionator to remove the liquid phase consisting mainly of monoch... | 03/27/1984 |
| 4426321 | Odorant alkadienyl ketones, alcohols and oximes This invention discloses a number of novel odorant alkadienyl ketones, alcohols and oximes having from 9 to 15 carbon atoms, processes for making same and odorant compositions containing same.... | 01/17/1984 |
| 4423243 | Process for the preparation of 2,2-dimethyl-3-vinyl-cyclopropanecarboxylic acids and esters A process for the production of 2,2-dimethyl-3-vinyl-cyclopropanecarboxylic acid derivative of the formula ##STR1## in which R1 is a hydrogen atom, an alkyl group or a radical of an alcohol which can be used in pyrethroids, and X1 | 12/27/1983 |
| 4385185 | ଲ-γ-Unsaturated ketones and isoprenoid 2,6 diones, a process for producing the same and their use as fragrant and flavoring substances Compounds of the general formula I: ##STR1## wherein R1 and R2 are equal or different alkyl-, alkoxyalkyl-, or aryl groups, or together form a ring; R3 is an allyl or benzyl radical; and R4 and R5 | 05/24/1983 |
| 4328363 | Manufacture of gamma halogen substituted adducts Halogen-substituted olefin addition compounds that contain a carbonyl group are formed by oxidatively adducting an olefin and a carbonyl compound such as a ketone, aldehyde, or ester. The method consists of reacting the olefin and the carbonyl component, ... | 05/04/1982 |
| 4310702 | Selective monochlorination of ketones and aromatic alcohols Sulfuryl chloride is reacted in the liquid phase with an organic reactant which is a ketone or aromatic alcohol unsubstituted on both ortho carbons in the presence of a moderator selected from the group consisting of aliphatic alcohols of 1-3 carbons and ... | 01/12/1982 |
| 4307034 | Inert organic solvent dispersion of alkali hydroxide and reaction using the same An inert organic solvent dispersion of alkali hydroxide is prepared by mixing an alkali hydroxide, an inert organic solvent and a stabilizer and heating and stirring at the temperature for forming the pasty alkali hydroxide and cooling the dispersion. The... | 12/22/1981 |
