Abstract:
A friction stir welding apparatus (1) has a probe (32)that is movable in a vertical direction with respect to a processing-target side surface (W s ) of a processing target member (W) and rotatable relative to the processing target member (W), a welding tool (30) having an interposed member (34) that covers a part of an outer periphery of the probe (32) and is rotatable relative to the probe(32), a mounting member (10)on which the processing target member (W) is mounted, a movement mechanism (50) having an arm (54) fitted with the welding tool (30) that can move the welding tool (30)with respect to the processing target (W) member by moving the arm (54, and a correction mechanism (20) having a correction member (22) that can correct a moving direction of the welding tool (30) so as to be matched with a predetermined processing direction (D), by bringing the interposed member into contact with the processing target member (W) when the welding tool (30) is moved with respect to the processing target member (W) by moving the arm(54), and fixed to the mounting member (10).
Abstract:
A trifluoromethylthiophenium derivative salt useful as synthetic intermediates for pharmaceuticals and agrochemicals, a method for producing the same, and a method for producing trifluoromethyl-containing compounds using the same are provided. An S-(trifluoromethyl)-benzo[b]thiophenium derivative salt is represented by the following general formula (1):
wherein R 1 , R 2 , R 3 , and R 4 are each independently a hydrogen atom, a methyl group, an ethyl group, a linear, branched, or cyclic alkyl group having 3 to 10 carbon atoms, a methoxy group, an ethoxy group, a linear, branched, or cyclic alkyloxy group having 3 to 10 carbon atoms, a fluorine atom, a chlorine atom, a bromine atom, a nitro group, or a cyano group, R 5 is a methyl group, an ethyl group, a linear, branched, or cyclic alkyl group having 3 to 10 carbon atoms, a phenyl group, or a substituted phenyl group, and X - represents an anion. Various trifluoromethyl-containing compounds are produced using a method for producing the S-(trifluoromethyl)-benzo[b]thiophenium derivative salt, and using the S-(trifluoromethyl)-benzo[b]thiophenium derivative salt as a trifluoromethylating agent.
Abstract:
Provided is a reaction reagent for trifluoromethylation with high general versatility and good efficiency. The reaction reagent for trifluoromethylation contains an iron compound, trifluoromethyl iodide, a sulfoxide and a peroxide, and may further contain an acid. The iron compound is, for example, iron(II) sulfate, ammonium iron(II) sulfate, iron(II) tetrafluoroborate, ferrocene, bis(η 5 -pentamethylcyclopentadienyl)iron or an iron powder; the sulfoxide is, for example, dimethyl sulfoxide; the peroxide is, for example, hydrogen peroxide or hydrogen peroxide-urea composite; and the acid is, for example, sulfuric acid, tetrafluoroboric acid or trifluoromethanesulfonic acid.
Abstract:
The present invention provides a process for producing highly pure fluoro-compounds by making use of less costly and readily handleable N-(2-chloro-1,1,2-trifluoroethyl)diethylamine. The process produces little or no chlorinated by-products. Specifically the present invention provides a process for producing a fluoro-compound, comprising fluorinating an alcohol derivative represented by the following general formula (1):
R 1 R 2 R 3 COH (1)
(wherein R 1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, aryl group, alkylcarbonyl group, alkoxycarbonyl group, arylcarbonyl group or aryloxycarbonyl group; and R 2 and R 3 are each independently a substituted or unsubstituted alkyl group, aryl group, alkylcarbonyl group, alkoxycarbonyl group, arylcarbonyl group or aryloxycarbonyl group, wherein at least two of R 1 , R 2 and R 3 may together form part of a ring structure, either with or without a heteroatom) with N,N-diethyl-2-chloro-1,1,2-trifluoroethylamine to form a fluoro-compound represented by the following general formula (2):
R 1 R 2 R 3 CF (2)
(wherein R 1 , R 2 and R 3 are as defined above), the process being characterized in that an alcohol derivative represented by the following general formula (3):
R 4 OH (3)
(wherein R 4 represents a substituted or unsubstituted alkyl group or aryl group) is added to the reaction system.
Abstract translation:本发明提供了使用成本较低且易于处理的N-(2-氯-1,1,2-三氟乙基)二乙胺制备高纯度氟化合物的方法。 该方法几乎不产生或不产生氯化副产物。 具体地说,本发明提供一种氟化合物的制造方法,其特征在于,含氟化下述通式(1)表示的醇衍生物:ƒ€ƒ€ƒ€ƒ€ƒ€ƒR1 R 2 R 3 COH€ƒ€ƒ€ƒ(1)(其中R 1表示氢原子,取代或未取代的烷基,芳基,烷基羰基,烷氧基羰基,芳基羰基或芳氧基羰基; R 2和R 3各自独立地为取代或未取代的烷基,芳基,烷基羰基,烷氧基羰基,芳基羰基或芳氧基羰基,其中R 1,R 2和R 3中的至少两个可以一起形成环结构的一部分, 或不含杂原子)与N,N-二乙基-2-氯-1,1,2-三氟乙胺反应以形成由以下通式(2)表示的氟化合物:€ƒ€ƒ€ƒ€ƒ€ ƒ€ƒ€ƒR1 R 2 R 3 CF€ƒ€ƒ€ƒ(2)(其中R 1,R 2和R 3为 该方法的特征在于由以下通式(3)表示的醇衍生物:ƒ€ƒ€ƒ€ƒ€ƒ€ƒR4 OH€ƒ€ƒ€ƒ (3)(其中R 4表示取代或未取代的烷基或芳基)加入到反应体系中。
Abstract:
A process for producing a fluorinated alcohol from a fluoroalkyl halide through a one-stage reaction in high yield with high selectivity without using a highly toxic compound such as a heavy metal compound, which is difficult to handle or treat. The process, which is for producing a fluorinated alcohol represented by the general formula (2): Rf(A)OH (2) (wherein Rf represents C1-10 perfluoroalkyl and A represents a C3-10, linear or branched, saturated hydrocarbon group), is characterized by reacting a fluoroalkyl halide represented by the general formula (1): Rf(A)X (1) (wherein Rf and A are the same as defined above and X represents halogeno) with an alkali metal salt of 4-hydroxybutyric acid in Ϝ-butyrolactone as a solvent.