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| Number | Title | Issue Date |
| 7060862 | Method for the preparation of α,α,α′,α′-tetrachloro-p-xylene with high purity A method of synthesizing a high purity product of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes carrying out a first stage reaction of terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a pr... | 06/13/2006 |
| 7026522 | Production of 2-amino-2-[2- (4-alkylphenyl) ethyl] propane-1, 3-diols Disclosed is a process for the production of 2-amino-2-[2-(4-C2-20-alkyl-phenyl)ethyl]propane-1,3-diols. ... | 04/11/2006 |
| 6992231 | Method for the preparation of α,α, α′,α′-tetrachloro-p-xylene A synthesis method of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes reacting terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a product mixture containing α,α,α′,α′-tetrachloro-p-x... | 01/31/2006 |
| 6037509 | Process for producing 1-bromo-4-phenylbutane A process for producing 1-bromo-4-phenylbutane of the formula (1): ##STR1## which is characterized by the steps of; reacting 4-bromobutyryl halide of the formula (2): ##STR2## where X is a halogen atom, with benzene in the presence of a Lewis a... | 03/14/2000 |
| 5319150 | Chloroalkylation of aromatic compounds The co-formation of diarylalkane by-product in the chloroalkylation of an aromatic compound with an ether corresponding to the formula R-O-R', wherein R is an -chloroalkyl group containing at least two carbons and R' is R or alkyl, is minimized by ... | 06/07/1994 |
| 5136115 | Bromoalkylation of aromatic compounds The co-formation of diarylalkane by-product in the bromoalkylation of an aromatic compound with an ether corresponding to the formula R--O--R', wherein R is an -chloroalkyl group containing at least two carbons and R' is R or alkyl, is minimized by... | 08/04/1992 |
| 5003116 | Haloethylation of aromatic hydrocarbons A monoalkylaromatic hydrocarbon is haloethylated to a 1-halo-1-arylethane with minimal co-formation of diarylalkane by-product by reacting it with hydrogen chloride or bromide and acetaldehyde in the presence of sulfuric acid only until not more than abou... | 03/26/1991 |
| 5001288 | Haloethylation of aromatic hydrocarbons A monoalkylaromatic hydrocarbon is haloethylated to a 1-halo-1-arylethane with minimal co-formation of diarylalkane by-product by reacting it with hydrogen chloride or bromide and acetaldehyde at a temperature in the range of abaout +10° C. to about -35Â... | 03/19/1991 |
| 4990704 | Haloethylation of aromatic hydrocarbons A monoalkylaromatic hydrocarbon is haloethylated to a 1-halo-1-arylethane with minimal co-formation of diarylalkane and acetaldehyde by-products by reacting it with hydrogen chloride or bromide and a stoichiometric deficit of acetaldehyde in the presence ... | 02/05/1991 |
| 4935565 | Process and catalyst for hydrochlorination of hydrocarbons Methyl chloride is produced by contacting methanol and hydrogen chloride in the vapor phase in the presence of KZnCl3 supported on silica. The process produces methyl chloride in good yield with minimal formation of dimethyl ether as a by-produ... | 06/19/1990 |
| 4593144 | Process for preparing substituted benzotrichloride compounds This invention pertains to a process for preparing substituted and unsubstituted benzotrichlorides. The process generally involves reacting the starting compound with a perchloroalkane with presence of base and a phase transfer catalyst.... | 06/03/1986 |
| 4568700 | Process for the production of halomethylating agents which are of low volatility There is provided a process for the production of halomethylating agents which are of low volatility; and a process for the halomethylation of aromatic substrates and aromatic polymeric substances. Among products produced from the halomethylaryl polymers ... | 02/04/1986 |
| 4563529 | Process for producing trifluoromethylpyridines A trifluoromethylpyridine selected from the group consisting of -trifluoromethylpyridine, γ-trifluoromethylpyridine, a bis(trifluoromethyl)pyridine and chlorides thereof which have 1 to 3 chlorine atoms in its pyridine nucleus is produced by react... | 01/07/1986 |
| 4419514 | Method for converting carboxylic acid groups to trichloromethyl groups Method for converting carboxylic acid groups to trichloromethyl groups which comprises contacting a compound containing a carboxylic acid group with a phenylphosphonic dichloride and phosphorus pentachloride and recovering the thus produced product.... | 12/06/1983 |
| 4334111 | Process for preparing substituted benzotrihalides Benzotrihalides are prepared by pyrolyzing a substituted phenyl trihaloacetate of the formula ##STR1## wherein each X is halo, nitro, alkyloxy, aryloxy, aralkyoxy, cyano, lower alkyl, haloalkyl, haloalkyloxy, alkenyl, haloalkenyl, carbamoyl, N,N... | 06/08/1982 |
| 4156602 | 1-(1-Chloropropyl)-2,4,6-triisopropylbenzene and its use to control weeds Disclosed are 1-(1-chloropropyl)-2,4,6-triisopropylbenzene and the method of controlling weeds, particularly crabgrass, by preemergent application of the compound to the soil.... | 05/29/1979 |
| 4045501 | Method for making o- and p- haloalkyl styrenes A method for making o- and p- halomethyl styrenes which comprises reacting an ethyl benzene, paraformaldehyde and hydrogen halide, treating the reaction product with a halogen, and dehydrohalogenating the resulting o- and p- halomethyl (1-haloethyl) benze... | 08/30/1977 |
