- Photocatalytic C-O Bond Cleavage of Alcohols Using Xanthate Salts
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The homolytic cleavage of C-O bonds to afford alkyl radicals is an attractive yet challenging transformation in organic synthesis. Herein we describe a photocatalyzed deoxygenative C-C coupling reaction of xanthate salts, which can be easily prepared from the corresponding alcohols. The key to the success of this strategy is the low oxidation potential of the xanthate salt and the use of an appropriate phosphine to accelerate the desulfurative release of carbonyl sulfide.
- Maruo, Yuri,Matsugasako, Tatsuki,Nanjo, Takeshi,Takemoto, Yoshiji
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supporting information
(2022/01/15)
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- KETONE-CONTAINING CONTROLLED RADICAL INITIATORS FOR POLYMERIZATION REACTIONS
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Controlled radical initiators that are ketone-containing dithiocarbamate or ketone-containing dithiocarbonate compounds are used to form polymeric materials that have a single polymeric block or multiple polymeric blocks. Reaction mixtures containing controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and articles containing the polymeric materials, the crosslinkable compositions, or the crosslinked compositions are provided.
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Paragraph 0201
(2020/12/08)
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- POLYMERIC MATERIALS FORMED USING INITIATORS WITH A KETONE GROUP AND TWO THIOCARBONYLTHIO-CONTAINING GROUPS
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Controlled radical initiators, reaction mixtures containing the controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and various articles are provided. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a carbonyl group between the two dithiocarbamate or dithiocarbonate groups.
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Page/Page column 49
(2019/09/12)
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- A two-trisulfide isopropyl xanthate preparation method (by machine translation)
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The present invention discloses a two-trisulfide isopropyl xanthate preparation method, in order to isopropanol, solid alkali, carbon bisulfide and chlorine as raw materials, the materials are added into the reactor, and then each raw material in shear dispersion under reaction, make the disulfide isopropyl xanthate. The invention oxidant chlorine, thereby avoiding the introduction of water, meets the isopropyl alcohol with carbon disulfide reaction needs anhydrous conditions, will be isopropyl xanthate and oxidation of the generation of the two-step reaction "combined", the "one-step" process for preparing disulfide isopropyl xanthate. At the same time, through the isopropanol is used as the dispersion medium, controls the oxidant chlorine access time, access time and other reaction conditions, the product of the invention yield and purity are higher, with the use of sodium hypochlorite as oxidizing agent compared with the "two-step" process, simplifying the process, the amount of raw material is reduced, thereby reducing the waste of the emissions, ensuring the product yield. (by machine translation)
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Paragraph 0035
(2017/06/28)
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- Mixed ligand zinc(II) and cadmium(II) complexes with alkyl xanthates and 2,2′-bipyridyl
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Mixed ligand complexes of zinc(II) and cadmium(II) with alkyl xanthates as primary ligands and 2,2′-bipyridyl (bpy) as secondary ligand have been synthesized and characterized by elemental analysis, infrared and 1H NMR spectral data. Infrared spectra reveal that xanthates act as uni- and bidentate ligands in zinc and cadmium complexes respectively. Tetrahedral geometry is assigned for zinc(II) complexes while an octahedral structure for cadmium(II) complexes.
- Hussain Reddy,Sambasiva Reddy
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p. 1118 - 1120
(2007/10/03)
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- VIBRATIONAL ANALYSIS OF ALKYL XANTHATES
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Rotational isomers are indicated in the Raman spectra of sodium ethyl and other xanthates.Vibrational bands useful for characterizing xanthate solids and aqueous solutions are given.Vibrational analyses are reported for sodium ethyl xanthate, trans and gauche forms, and the methyl and isopropyl analogs using a Cartesian coordinate force field derived from ab initio molecular orbital calculations.
- Colthup, N. B.,Powell, L. Porter
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p. 317 - 322
(2007/10/02)
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