摘要:
This invention relates to certain novel fluorinated isopropyl methyl ethers represented by the following formula:
wherein X is chlorine of fluorine, X'' is chlorine or fluorine, and R is CH3 or C2H5. The compounds can be prepared by reacting the corresponding halogenated isopropyl alcohol with a lower alkyl sulfate or halide in the presence of an alkaline metal hydroxide. The compounds are useful as solvents or dispersants for fluorinated materials, and the compounds (CF3)2CHOCH3, CF2CL(CF3)CHOCH3, and (CF2Cl)2CHOCH3, exhibit anesthetic properties in mammals.
摘要:
DIHYDRIC PHENOIS CAN BE USED DIRECTLY IN THE ULLMANN ETHER SYNTHESIS BY USING A COPPER SALT CATALYST AND AN AMINE SOLVENT THAT DISSOLVES THE CATALYST BY FORMING COORDINATE COVALENT BONDS WITH COPPER IONS.
摘要:
Trifluoroethanol, an alkali metal hydroxide, and difluorochloromethane are reacted to prepare 2,2,2-trifluoroethyl difluoromethyl ether which is recovered and chlorinated in the presence of photoenergy to prepare 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether which exhibits excellent anesthetic properties in inhalation susceptible mammals.
摘要:
A PROCESS FOR THE PREPARATION OF A GROUP OF COMPOUNDS REPRESENTATIVE OF WHICH ARE POLYPHENYL ETHERS, MIXED POLYPHENYL ETHER-THIOETHERS, PHENOXYBIPHENYLS AND PHENOXYPHENYLMERCAPTOBIPHENYLS COMPRISING THE STEPS OF INTERACTING AN AROMATIC IODO, BROMO OR CHLORO COMPOUND WITH AN ALKALI METAL SALT OF AN AROMATIC HYDROXY COMPOUND IN THE PRESENCE OF CERTAIN DIPOLAR APROTIC SOLVENTS REPRESENTATIVE OF WHICH ARE SEC- AND TERT-AMIDES, PHOSPHORAS AMIDES AND SULFONES. THE ABOVE COMPOUNDS HAVE MANY USES, AMONG WHICH ARE USE AS HYDRAULIC FLUIDS AND JET ENGINE LUBRICANTS.
摘要:
Addition products of ethylene oxide are formed by passing alcohols, phenols, or their addition products with ethylene oxide or propylene oxide, with ethylene oxide in a molar ratio of 1:1 to 1:4 in the presence of conventional alkaline catalysts, through an extended tube-like reactor having a small cross-section, and surrounded by a heat exchanger, the mixture is at such a pressure that it is in the liquid state and reaches 170-230 DEG C. in the first half of the reactor zone, and in the second half passes through a maximum of 240-330 DEG C., and has a residence time in the reactor zone of 8-150 seconds, and the product leaving the zone is immediately cooled to below 100 DEG C. The process adds on up to four moles of ethylene oxide. Examples describe the addition of ethylene oxide to lauryl alcohol, nonylphenol, a mixture of C12-C14 fatty alcohols and a mixture of unsaturated predominantly C18 alcohols.
摘要:
Compounds of the following formula are suitable for reducing the interfacial surface tension of oily phases with respect to water: ##STR1## wherein z is 1 or 2,R, for z=1, is alkyl, aralkyl, or alkylaryl of 8-22 carbon atoms in the alkyl chain, or hydroxyalkyl of 2-22 carbon atoms, and, for z=2, is (aryl)alkylene of 4-18 carbon atoms,R' and R" each independently is hydrogen or C.sub.1 -C.sub.20 -alkyl wherein R' and R" are not simultaneously hydrogen and R' and R" together have 8-20 total carbon atoms,x is 10-40 andy is 1.2-5.
摘要:
A new process for preparing 2,3-dichloroanisole comprises reacting 1,2,3-trichlorobenzene with an alkali metal methoxide preferably in the presence of methanol.
摘要:
METHYL-B-PHENYL-ETHYL-ETHER IS PREPARED BY TREATING ALUMINUM-B-PHENYL-ETHOXIDE WITH DIMETHYLSULPHATE AT WATER BATH TEMPERATURE. THE UNREACTED DIMETHYL SUPPHATE IS DESTROYED BY BOILING WITH CAUSTIC SODIA SOLUTION AND THE LIGHTER LAYER CONTAINING METHYL-B-PHENYL-ETHER IS SEPARATED BY FRACTIONATION. THE ALUMINIUM-B-PHENYL-ETHOXIDE IS PREPARED BY TREATING B-PHENYL-ETHYL-ALCOHOL WITH AL/HG COUPLE IN THE PRESENCE OF CARBON TETRACHLORIDE.
摘要:
IN A METHOD FOR PREPARING FLUORINE-CONTAINING ETHERS OF THE FORMULA
F-C(-R1)(-R2)-O-A-E
WHEREIN R1 AND R2 ARE INDEPENDENTLY EITHER FLUORINE OR CERTAIN FLUORINE-CONTAINING ALIPHATIC RADICALS, OR, TAKEN TOGETHER, FORM A FLUORINE-CONTAINING CYCLOALIPHATIC STRUCTURE, WITH THE PROVISO THAT ONLY ONE OF R1 OR R2 MAY BE FLUORINE, WHEREIN A IS A LINEAR, BRANCHED CHAIN OR CYCLIC ALKYLENE OR HALOALKYLENE RADICAL, AND WHEREIN E IS CL, BR OR I, BY REACTING A FLUORINATED KETONE OR ACYL FLUORIDE WITH AN IONIZABLE INORGANIC FLUORIDE TO FORM AN ORGANIC FLUORIDE SALT, AND REACTING THE ORGANIC FLUORIDE SALT WITH AN OLEFIN AND A HALOGEN TO FORM THE FLUORINE-CONTAINING ETHER, YIELDS ARE IMPROVED, REACTION TIMES ARE SHORTENED, AND BY-PRODUCT FORMATION IS REDUCED BY IMPROVEMENTS COMPRISING USE OF SUPERATMOSPHERIC REACTION PRESSURE, OR USE OF SUPERATMOSPHERIC REACTION PRESSURE TOGETHER WITH OBSERVATION OF CERTAIN CRITICAL REACTANT MOLAR RATIOS, AND/OR OPERATION WITHIN CERTAIN TEMPERATURE LIMITS.