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7582781 |
Optically active halohydrin derivative and process for producing optically active epoxy alcohol derivative from the same
The present invention provides an industrially safe, easily operable process for producing an optically active epoxy alcohol derivative useful as an intermediate for pharmaceuticals from...
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7405312 |
Manufacturing method of hexafluoropropylene oxide with high yield
The present invention relates to a method for preparing hexafluoropropylene oxide with high yield, and particularly to a method for preparing hexafluoropropylene oxide comprising the step of...
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6946566 |
Process for preparation of optically active halogeno hydroxypropyl compound and glycidyl compound
A process for preparing regioselectively an optically active 1-halogeno-2-hydroxypropyl compound of the following formula;
wherein X is halogen atom and Nu is a heteroatom having a...
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6765100 |
Method for producing epoxide crystal
The invention relates to a method for industrially producing highly pure (2R, 3S)- or (2S, 3R)-N-carbamate-protected β-aminoepoxide (crystal) or (2R, 3S)- or (2S, 3R)-N-carbamate-protected...
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6764545 |
Production method of epoxide crystal
The present invention provides a production method including adding water to a solution of (2R,3S)-3-tert-butoxycarbonylamino-1,2-epoxy-4-phenylbutane ((2R,3S)-epoxide compound) or...
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6586607 |
Process for making diglycidylether of alkoxylated resorcinol
A process for the preparation of diglycidylether of alkoxylated resorcinol using novel catalysts is disclosed. In particular, it has been found that antimony, indium and tellurium halides are...
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5965753 |
Process for preparation of glycidyl sulfonate derivative
A process for preparation of a glycidyl sulfonate derivative with high purity and in high yield, which is characterized in reacting glycidol which is prepared from treating 3-chloro-1,2-propanediol...
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5936104 |
Process for producing 1,2-epoxy-3-amino-4-phenylbutane derivatives
The present invention provides a process for producing 1,2-epoxy-3-amino-4-phenylbutane derivatives which comprises treating a 1-halo-2-hydroxy-3-amino-4-phenylbutane derivative with a base in an...
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5847169 |
Process for preparing oxiranemethanamine derivatives
A process for preparing oxiranemethane derivatives which are useful as intermediates for preparing aspartyl protease inhibitors comprising the steps of activating an aminodiol, acylating the...
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5824821 |
Process for the preparation of iodinated contrast agents and intermediates therefor
The invention provides a process for the production of a 2,3-dihydroxypropylamino compound, said process comprising the reaction steps of: (i) obtaining an allylamino compound; (ii)...
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5637740 |
Production of 2, 3-epoxypropyl trialkyl ammonium chlorides
The reaction mixture obtained in the production of 2,3-epoxypropyltrialkylammonium chlorides by treatment of chlorohydroxypropyltrialkylammonium chlorides with alkaline acting materials in aqueous...
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5589554 |
Adhesive composition and process for preparing it
An adhesive composition is here disclosed which comprises a 2-cyanoacrylate and at least one of compounds (a) and (b): (a) an addition reaction product of an epoxy group and a compound having a...
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5532389 |
Process for preparing alkylene oxides
A process of preparing alkylene oxides comprises steps of: (1) optionally forming a hypochlorite solution; (2) contacting chlorine with a solution of a hypochlorite below about 60° C., and a pH of...
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5523425 |
Process for producing Chlorohydrins
In a process for producing a chlorohydrin an olefinically unsaturated compound is reacted with chlorine in the presence of water. Water is applied as a film on a solid support in a reaction zone...
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5486627 |
Method for producing epoxides
Described herein is a method for producing epoxides which is continuous, inhibits formation of chlorinated byproducts, and eliminates or substantially reduces waste water discharge. The method...
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5466764 |
Adhesive composition comprising a cyanoacrylate and an epoxy adduct
There are here disclosed an adhesive composition obtained by adding a fluorine-containing carboxylic acid epoxy adduct to a 2-cyanoacrylate, and a process for preparing the adhesive composition....
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5428180 |
Oxidations using polyazamacrocycle metal complexes
A method is provided for oxidizing alkenes to epoxides by treating the alkene with a transition metal ion complex which includes a salen or salophen derivative and peroxymonosulfate ion or...
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5344945 |
Process for the production of epichlorohydrin
Process for the production of epichlorohydrin in which the chloroaliphatic impurities formed at the hypochlorination of allyl chloride to dichloropropanols are removed from the crude aqueous...
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5245048 |
Production of glycidyl compounds
A process for the production of a glycidyl ether of an alcohol, comprising reacting an alcohol with epichlorohydrin, in substantially the stoichiometric proportions required to produce the 1:1...
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5245057 |
Horizontal continuous reactor and processes
A continuous horizontal reactor system and process for employing such a system. In one embodiment, a reactor system having a cylindrical multi-compartment vessel, the compartments...
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5126464 |
Polyazamacrocycles and their metal complexes and oxidations using same
A 13 or 14 member macrocyclic compound having the following ring nucleus: ##STR1## wherein: n=0 or 1; m=0 or 1; n+m>0 X 1 , X 2 , Z 1 and Z 2 independently represent H 2 or O; Y 1...
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5055601 |
Fluoroepoxides and a process for production thereof
A process for epoxidation of a fluoro-olefin is disclosed. The process comprises epoxidizing a fluoro-olefin represented by the general formula (I): ##STR1## wherein X 1 , X 2 and X 3 each...
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4925961 |
Process for the production of hexafluoropropylene oxide
A process for producing hexafluoropropylene oxide from hexafluoropropylene is described. The process comprises epoxidizing hexafluoropropylene in a two-phase system of an aqueous phase and an...
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4900849 |
Process for the production of dichlorohydrin
A process for the continuous production of di- and/or epichlorohydrin is disclosed wherein impurities, e.g., chloroaliphatic alkanes and chloroaliphatic ethers are removed by energy efficient...
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4849531 |
Process for the preparation of 2,3-epoxyamides
A process for the preparation of a 2,3-epoxyamide of the formula ##STR1## in which R 1 represents hydrogen or straight-chain or branched C 1 -C 8 -alkyl, which may be substituted by phenyl or...
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4704463 |
Process for the production epichlorohydrin
A process for the production of epichlorohydrin is disclosed which comprises reacting allyl chloride, chlorine and water to form an intermediate, then rapid conversion and separation of...
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4634784 |
Process for production of epichlorohydrin
A process for producing epichlorohydrin comprising the steps of: (a) reacting allyl alcohol with chlorine at a temperature of -30° C. to 20° C. under a pressure of 0 to 10 atm (gauge) in an...
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4615709 |
Cationic compound, process for preparing same and treatment of textile material for improved dyeing
A cationic compound of the formula [I] below is used for improving the dyeing properties of a textile material by treating therewith the textile material before or after dyeing with an anionic dye....
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4501874 |
2,3-Epoxy carbamates
This invention is novel compounds containing one or more 2,3-epoxyalkyl carbamate moieties wherein the carbamate nitrogen is tertiary; prepared by a process which comprises (A) contacting an...
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4496753 |
Saponification of chlorohydrins
A chlorohydrin, such as glycerol dichlorohydrin is saponified in two stages, with the first stage being carried out in a high back-mix saponification reactor, and the second stage being carried out...
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4496752 |
Production of epoxy compounds from olefinic compounds
Chlorine and tertiary alkanol dissolved in an inert organic solvent are reacted with aqueous alkali to produce tertiary alkyl hypochlorite which is recovered in the organic solvent and reacted with...
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4443619 |
Chlorocitric acids
The present invention relates to chlorocitric acids of the formula ##STR1## and stereoisomers, optical antipodes and pharmaceutically acceptable salts thereof, to methods of preparation thereof,...
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4410714 |
Production of epoxy compounds from olefinic compounds
A process for producing an epoxy compound by chlorinating a tertiary alkanol to the corresponding hypochlorite, followed by reaction of the hypochlorite with water and an olefinically unsaturated...
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4322370 |
Polycyclic compounds
Compounds of the formula (II): ##STR1## and pharmaceutically acceptable salts thereof, wherein R 1 is phenyl or naphthyl or substituted phenyl or naphthyl group; R 2 is: ##STR2## wherein R 5 is...
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4126526 |
Cyclic process for production of alkylene oxide using electrolysis of brine
In an integrated process for electrolytic production of chlorine and the production of an olefin oxide via the chlorohydrin wherein the chlorohydrin is contacted with an aqueous solution of sodium...
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4113746 |
Process for continuous production of epichlorohydrin
A process for continuously producing epichlorohydrin which comprises reacting chlorine and allyl chloride in an aqueous medium, neutralizing and saponifying the resulting hydrochloric...
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3878227 |
Process for making tert.-butyl glycidyl ether
The reaction of isobutylene with a glycerol monohalohydrin produces a mixture of tert.-butyl ethers of the halohydrin. Treatment of this mixture with a dehydrohalogenating agent converts the...
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3718650 |
NEW DERIVATIVES OF SUBSTITUTED PIPERAZINES
A process for obtaining substituted piperazine derivatives, notably an amino-alcohol derivative for therapeutic use, is described. At least one epoxide, particularly 3-phenyl, 3-methoxy,...
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3673260 |
HALOGENATED THIOETHERS AND METHOD OF PREPARATIONS
New halogenated thioether compounds of the general formula R (S--CH 2 --CHY--CH 2 X) n In which X represents a halogen atom, Y represents a hydrogen atom or a hydroxyl group, R is a mono or...
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3457282 |
GLYCIDOL RECOVERY PROCESS
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3372142 |
Epoxidation process
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3335156 |
Process for the preparation of glycidyl esters
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3328485 |
Fire-resistant polyester resins prepared from 2-methyl-3, 3, 3-trichloro-1, 2-epoxypropane
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3290336 |
Epoxide production
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3268561 |
Glycidyl ethers
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3247227 |
Epoxidation of organic halohydrins
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3147286 |
Process for the preparation of halogenated glycidyl ethers
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3093689 |
Hydroxy halogenated ether production
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2965652 |
Process of preparing glycidyl ethers
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2860146 |
Manufacture of epihalohydrins
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