摘要:
Disclosed are methods of producing fluorinated alcohols which find particular use in the syntheses of pharmaceutical drugs. The methods comprise generally, the steps of (a) reacting a halogenated alkane with an alkyl vinyl ether to form an unsaturated halogenated aldehyde; (b) reducing the unsaturated halogenated aldehyde to form an unsaturated halogenated alcohol; and (c) reducing the unsaturated halogenated alcohol to form a fluorinated alcohol.
摘要:
The invention provide a method for producing a fluoroalcohol of the following formula (1): H(CFR1CF2)nCH2OH (1) (wherein R1 represents F or CF3, when n=1; R1 represents F, when n=2) comprising reacting methanol with tetrafluoroethylene or hexafluoropropylene in the presence of a free radical source, wherein the reaction mixture is subjected to distillation either in the presence of a base or after contact of said reaction mixture with a base.
摘要:
The present invention provides a catalyst for preparing a fluorine-containing alcohol compound, the catalyst having at least one component selected from elements in Group 1B, Group 2B, Group 6A, Group 7A and Group 8 of the periodic table, ions of these elements, oxides containing these elements, hydroxides containing these elements and salts containing these elements, said component being supported on at least one complex oxide selected from Si—Al complex oxides, Al—P complex oxides and Si—Al—P complex oxides; and a method for preparing a fluorine-containing alcohol compound, the method comprising reacting a halogenated fluorine compound with water in the presence of the catalyst. According to the present invention, a fluorine-containing alcohol compound can be prepared at a relatively low reaction temperature and in a high yield.
摘要:
The subject-matter of the invention is a fluorinated diol and its process of preparation. The fluorinated diol corresponds to the formula (I): CnF2n+1—A—CH2OCH2—C(CH2OH)2—R in which n has a value from 2 to 20 and A means —CH═CH— or —CH2CH2— and R is an alkyl group comprising 1 to 4 carbon atoms.
摘要:
The subject invention relates to a process for the trifluoromethylation of sulfates, including cyclic and acyclic sulfates. The subject invention further pertains to the compounds produced by the trifluoromethylation of sulfates.
摘要:
The method for preparing 2,2,3,4,4,4-hexafluoro-1-butanol includes reacting methanol and hexafluoropropene in the presence of a free radical initiator such as di-isopropyl peroxydicarbonate at 25-50° C. and a pressure of 100-300 psi in an autoclave. An inert gas such as nitrogen and argon is added to the autoclave when the pressure is lower than 100 psi in the course of the reaction.
摘要:
Provided are methods of producing fluorinated alcohols from non-perfluorinated fluoroolefins and methanol. Certain preferred embodiments of such methods involve advantageously reacting a non-perfluorinated fluoroolefin with methanol under ambient-pressure and/or low-temperature conditions.
摘要:
Methods for producing perfluorocarbon monomethanols or dimethanols are disclosed. The methods of the invention can provide branched perfluorocarbon monomethanols or dimethanols with good purity and yields.
摘要:
A method for producing a fluoroalcohol of the following formula 1a, which comprises reacting a compound of the following formula 1 with water in a liquid phase at a temperature of 150° C. or higher under a gauge pressure of 0.4 MPa or higher: wherein n is an integer of from 1 to 5, X is a chlorine atom, a bromine atom or an iodine atom, p is an integer of at least 1, and R is a p-valent organic group, provided that when p is 1, R may be a hydrogen atom or a halogen atom.
摘要:
In a method for recovering a fluoroalcohol from a mixture comprising a fluoroalcohol and water, (i) a method for recovering a fluoroalcohol by distilling the mixture comprising the fluoroalcohol and water to separate water as an azeotropic or azeotrope-like composition; and (ii) a method for recovering a fluoroalcohol, wherein water is separated by pervaporation.