- METHOD OF PRODUCING 7-OCTENYL HALIDE
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PROBLEM TO BE SOLVED: To provide a method that allows high-yield, inexpensive and industrially advantageous production of 7-octenyl halide. SOLUTION: A method of producing 7-octenyl halide comprises reacting 7-octene-1-ol with thionyl halide represented by the general formula (I) in the figure, where X represents a chlorine atom, bromine atom or iodine atom. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
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Paragraph 0022
(2017/06/20)
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- METHOD FOR PRODUCING UNSATURATED GROUP-CONTAINING HALIDE
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PROBLEM TO BE SOLVED: To provide a method for producing an unsaturated group-containing halide whereby an unsaturated group-containing halide expected or used as an intermediate in the fields of medicine, agrochemical, resin and the like can be produced by a safe method, easily and at good yields. SOLUTION: The present invention provides a method for producing an unsaturated group-containing halide represented by formula (3) by halogenating an unsaturated group-containing alcohol represented by formula (2), in the presence of an organic base, with a sulfonic acid halide as a halogenating agent [R2 and R3 are H or unsubstituted; n is an integer of 1-6; and an unsaturated bond is a double bond or a triple bond]. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
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Paragraph 0043; 0044
(2017/03/28)
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- Method of manufacturing sulfonylhalides unsatd. alkyl
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PROBLEM TO BE SOLVED: To provide a production method capable of industrially simply and efficiently providing unsaturated alkyl halides useful as functional compounds, pharmaceuticals, agrochemicals or intermediates thereof.SOLUTION: Vinyl chloride and a Grignard reagent derived from a dihaloalkane represented by the specified general formula (1), where Xand Xeach independently represent Cl, Br or I and n represents an integer from 4 to 12, are reacted in the presence of an iron compound to produce unsaturated alkyl halides represented by the specified general formula (2), where Xrepresents Cl, Br or I and n represents an integer from 4 to 12.
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Paragraph 0041; 0042; 0043
(2017/03/08)
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- Green, Multi-Gram One-Step Synthesis of Core–Shell Nanocomposites in Water and Their Catalytic Application to Chemoselective Hydrogenations
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We devise a new and green route for the multi-gram synthesis of core–shell nanoparticles (NPs) in one step under organic-free and pH-neutral conditions. Simply mixing core and shell metal precursors in the presence of solid metal oxides in water allowed for the facile fabrication of small CeO2-covered Au and Ag nanoparticles dispersed on metal oxides in one step. The CeO2-covered Au nanoparticles acted as a highly efficient and reusable catalyst for a series of chemoselective hydrogenations, while retaining C=C bonds in diverse substrates. Consequently, higher environmental compatibility and more efficient energy savings were achieved across the entire process, including catalyst preparation, reaction, separation, and reuse.
- Urayama, Teppei,Mitsudome, Takato,Maeno, Zen,Mizugaki, Tomoo,Jitsukawa, Koichiro,Kaneda, Kiyotomi
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supporting information
p. 17962 - 17966
(2016/12/16)
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- Synthesis of a natural insect repellent isolated from thrips
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A convenient, high yield procedure for the synthesis of (11Z)-11,19-eicosadienyl acetate (1) has been developed. This compound shows strong repellent activity against ants.
- Csuk, René,Niesen, Anja,Tschuch, Gunther,Moritz, Gerald
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p. 6001 - 6004
(2007/10/03)
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- A novel copper (I) mediated, symmetrical coupling procedure for alkyl, aryl, benzyl, and thiophenyl dihalides
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A comparative study of Li2CuCl4 vs. Li2CuCl2 mediated mono-coupling reactions of dihalide substrates with allylmagnesium bromide is reported. Higher yields were obtained with Li2CuCl3 and the following trends in halide reactivity were observed. Br > Cl for alkyl, aryl, and thiophenyl dihalides; and benzyl halide > phenyl halide. Utilizing these trends, a symmetrical coupling procedure for alkyl, aryl, benzyl, and thiophenyl dihalides, simply carried out by combining the dihalide with metallic magnesium and Li2CuCl4 is reported.
- Johnson,Johnson, David K.,Ciavarri,Ciavarri, Jeffrey P.,Ishmael,Ishmael, Faoud T.,Schillinger,Schillinger, Kurt J.,Van Geel,Van Geel, Thomas A. P.,Stratton,Stratton, Stephen M.
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p. 8565 - 8568
(2007/10/02)
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- Dilithium tetrachlorocuprate catalyzed coupling of allylmagnesium bromide with α,ω-dihaloalkanes
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Allylmagnesium bromide has been shown to cross-couple with α,ω- dihaloalkanes in the presence of dilithium tetrachlorocuprate to yield, depending on reaction conditions, mono-coupled haloalkenes or di-coupled alkadienes. The order of the reactivity of the dihalides is I > Br >> CI and secondary halides show greater reactivity than primary halides.
- Johnson,Donohoe,Kang
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p. 1557 - 1564
(2007/10/02)
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- Reactions of Dialkylbromoboranes with Alkali Metal Hydrides in the Presence of Alkenes. Synthesis of 'Mixed' Trialkylboranes (RA2RBB) in Solution
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Dialkylbromoboranes react steadily with hydroxide-free sodium hydride in diglyme, in the presence of alkenes, to give nearly quantitative yields of partly mixed trialkylboranes.The reaction proceeds too slowly to allow prior clean preparation of dialkylboranes, so reaction in the presence of alkenes possessing hydride-sensitive functional groups is not possible, although terminal alkynes can be hydroborated in situ by a modified experimental procedure.Potassium hydride reacts much more rapidly with dialkylbromoboranes, the reactions being complete within minutes at 20 deg C, but the yields are lower.Addition of dibenzo-18-crown-6 leads to an increase in yield but the results are still inferior to those obtained using sodium hydride.Reaction of dialkylbromoboranes with lithium hydride is very sluggish.
- Maddocks, Peter J.,Pelter, Andrew,Rowe, Keith,Smith, Keith,Subrahmanyam, Chitti
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p. 653 - 656
(2007/10/02)
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