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| Number | Title | Issue Date |
| 7271302 | Method for brominating organic compounds The present invention relates to processes for the bromination of organic compounds, and to bromination microreactors for carrying out these processes. ... | 09/18/2007 |
| 7078576 | Process for producing isopropyl chloride The present invention is an industrially advantageous process for isopropyl chloride production in which the catalytic activity can be maintained under the milder reaction conditions than in the conventional processes, and which requires no special reactor. P... | 07/18/2006 |
| 6201161 | Method of reducing benzaldehyde or benzotrihalide content in a mixture Disclosed is a method of removing about 0.05 to about 20 mole % of a benzaldehyde or benzotrihalide from a mixture with a liquid compound that boils within about -10 to about &#b1;5° C. of the boiling point of the benzaldehyde or benzotrihalide. To the m... | 03/13/2001 |
| 5841004 | 3-substituted-, ଲ-dibromoethylbenzene and process for preparing the same A novel 3-substituted ,ଲ-dibromoethylbenzene of formula (I): ##STR1## wherein X represents a halogen atom or a trihalomethyl group, which is useful as an intermediate for pharmaceuticals or agricultural chemicals, is prepared by a simple... | 11/24/1998 |
| 5502261 | Process for preparing 2,2'-bis(halomethyl)-1,1'-binaphthyl The present invention relates to a process for preparing 2,2'-bis(halomethyl)-1,1'-binaphthyl, by reacting 2,2'-dimethyl-1,1'-binaphthyl in the presence of a solvent with a halogenating agent under the action of light having a wavelength of from 10 | 03/26/1996 |
| 5484932 | Halogenation processes in advantageous solvents, and novel bistrifluoromethyl-polyfluoroalkoxybenzenes Compounds such as ##STR1## wherein R is F, CF3, CF2 H, CHF CF3 or CF2 CF3, as well as related compounds containing chlorine, are used as solvents in halogenation processes.... | 01/16/1996 |
| 5288915 | Process of making ketones Ketones are prepared by admixing at least one gem-dichloro compound with at least one acid such that the ketone wherein the keto-oxygen replaces the gem-dichloro group is formed. The reaction is exemplified by the reaction of 9,9-dichlorofluorene with an ... | 02/22/1994 |
| 5157173 | Process for 4-chlorobenzotrichloride 4-chlorobenzotrichloride was prepared by the chlorination of p-xylene in the vapor phase at a temperature above about 200° C. in the presence of an activated carbon catalyst and water. An approximately 75 percent calculated yield was obtained at 250° C.... | 10/20/1992 |
| 5144067 | Process for the coproduction of alkyl iodides and alpha-iodocarboxylic acids and/or anhydrides thereof Disclosed is a process for the coproduction of (1) an alkyl iodide and (2) an -iodocarboxylic acid, a mono--iodocarboxylic anhydride or a mixture thereof which comprises contacting a mixture of an iodine compound and a carboxylic anhydride w... | 09/01/1992 |
| 4967026 | Process for the production of chloromethyl phenethyl bromide A process is described for preparing chloromethyl phenethyl bromide, in which phenethyl bromide is reacted with HCl and formaldehyde in the presence of zinc chloride as the catalyst, and in a chlorinated hydrocarbon as the solvent. The product is produced... | 10/30/1990 |
| 4966988 | Process for preparing acetonitrile 3-trifluoromethyl benzene A method is provided for forming (3-trifluoromethylphenyl)acetonitrile through the intermediate ,,-trifluoro-'-chloro-m-xylene. This intermediate is formed by selective chlorination of ,,'-trichloro-m-... | 10/30/1990 |
| 4898998 | Process for producing brominated acenaphthylene condensates A process for producing brominated acenaphthylene condensates of the formula: ##STR1## wherein x is 1 or 2, y is an integer from 1 to 6 and n is 1 or more, from elementary units of the following formulas: ##STR2## wherein y is as defined ab... | 02/06/1990 |
| 4853489 | Selective chlorination of para-tertiary-butytoluene A novel process for the selective chlorination of p-tert-butyltoluene to p-tert-butylbenzyl chloride.... | 08/01/1989 |
| 4785100 | Process for the production of N-substituted morpholine and piperidine derivatives A process is provided for the production of N-substituted morpholines and piperidines of the formula ##STR1## comprising the steps of (a) reacting a methallylbenzene of the formulas ##STR2## wherein R1 is H or a straight or branched ... | 11/15/1988 |
| 4423263 | Process for the side-chain polyhalogenation of polyalkylaromatic hydrocarbons A process for the selective side-chain halogenation of alkylaromatic hydrocarbons, consisting of reacting the hydrocarbon with an N-halogenoamine in the presence of a proton donor and a metal ion.... | 12/27/1983 |
| 4362884 | Silacrown ethers, method of making same, and use as phase-transfer catalysts Organosilicon compounds referred to as silacrown ethers or "silacrowns" are of the general formula: ##STR1## where R1 and R2 are organic radicals or hydrogen and n is an integer between 4 and 10 inclusive. Silacrown ethers are p... | 12/07/1982 |
| 4348265 | Process for the selective aliphatic chlorination of alkylbenzenes Alpha-chlorinated cumene derivatives are prepared by chlorinating cumene derivatives in the presence of light. The chlorination may be taken to 100 percent conversion when performed in a solvent, e.g., m-dichlorobenzene.... | 09/07/1982 |
| 4228106 | Process for producing beta-bromoethyl aromatic compounds The invention provides a process for producing beta-bromoethyl aromatic compounds comprising reacting hydrogen bromide with a vinyl aromatic compound in the presence of an azo radical initiator to effect the antimarkovnikoff addition of HBr to the vinyl d... | 10/14/1980 |
| 4133837 | Preferential aliphatic halogenation of ar-substituted alkylbenzenes In an isomeric mixture of ar-substituted-1-(sec-alkyl)benzenes, such as a mixture of 2-chlorocumene, 3-chlorocumene and 4-chlorocumene, the alkyl groups of the 3-isomer and 4-isomer react preferentially with a halogen in the presence of a catalyst such as... | 01/09/1979 |
| 4092369 | Process for the preparation of chloroalkylbenzene chlorides A process for the selective mono-chlorination of alkyl chloroaromatic compounds comprises reacting chlorine with an alkyl chloroaromatic compound of the formula: ##STR1## WHERE R is methyl or ethyl and n is 1 or 2; in the presence of an organi... | 05/30/1978 |
| 4087473 | Preferential aliphatic halogenation of ar-substituted alkylbenzenes In an isomeric mixture of ar-substituted-1-(sec-alkyl)benzenes, such as a mixture of 2,4-dichlorocumene and 3,5-dichlorocumene, the alkyl group of the 3,5-isomer reacts preferentially with a halogen in the presence of a catalyst such as benzoyl peroxide t... | 05/02/1978 |
| 4048238 | Promoted liquid phase oxidation of alkyl aromatic compounds A process is provided for oxygenating alkyl-substituted aromatic compounds. In the process alkyl-substituted aromatic compounds are contacted with molecular oxygen in the presence of a suitable monocarboxylic acid, an at least partially soluble Te or Se c... | 09/13/1977 |
| 4046821 | Oxychlorination of hydrocarbons in the presence of non-halide copper containing catalysts Copper chloride has been employed as a reagent for oxychlorination of hydrocarbons. It has now been found that a non-halide copper compound in combination with a rare earth compound is an excellent oxychlorination catalyst, e.g. a CuCO3 - CeO | 09/06/1977 |
