The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
Huangyao Qiu - One of the best experts on this subject based on the ideXlab platform.
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Bunte Salt ch2fsso3na an efficient and odorless reagent for monofluoromethylthiolation
Organic Letters, 2018Co-Authors: Fanmin Liu, Lvqi Jiang, Huangyao QiuAbstract:A practical and efficient monofluoromethylthiolation that employs the typical Bunte Salt, sodium S-(fluoromethyl) sulfurothioate, as the sulfur source is described. This reagent reacts readily with a variety of aryl amines and aryl thiols. The high tolerance of functional groups demonstrates the potential of this reaction. In addition, this method is suitable for the late-stage monofluoromethylthiolation of complex bioactive molecules.
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Bunte Salt CH2FSSO3Na: An Efficient and Odorless Reagent for Monofluoromethylthiolation
2018Co-Authors: Fanmin Liu, Lvqi Jiang, Huangyao QiuAbstract:A practical and efficient monofluoromethylthiolation that employs the typical Bunte Salt, sodium S-(fluoromethyl) sulfurothioate, as the sulfur source is described. This reagent reacts readily with a variety of aryl amines and aryl thiols. The high tolerance of functional groups demonstrates the potential of this reaction. In addition, this method is suitable for the late-stage monofluoromethylthiolation of complex bioactive molecules
Jouko Kankare - One of the best experts on this subject based on the ideXlab platform.
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organic thiosulfates Bunte Salts novel surface active sulfur compounds for the preparation of self assembled monolayers on gold
Langmuir, 1999Co-Authors: Jukka Lukkari, Minna Meretoja, Ilkka Kartio, K Laajalehto, Markku Rajamaki, And Mia Lindstrom, Jouko KankareAbstract:In this paper, we demonstrate that organic thiosulfates (Bunte Salts) with the general formula R−SSO3M, where R is either an aliphatic or aromatic group and M a monovalent cation, constitute a novel class of surface-active compounds with a sulfur-containing headgroup. Bunte Salts form self-assembled monolayers (SAMs) on gold under anaerobic conditions and chemisorb forming a Au−S bond, in which the chemical nature of sulfur is indistinguishable by X-ray photoelectron spectroscopy (XPS) from gold thiolate formed upon chemisorption of thiols and disulfides. The S−SO3 bond in the thiosulfate is cleaved during adsorption on the gold surface and the sulfite moiety is released. We have prepared one alkyl thiosulfate (sodium S-dodecylthiosulfate, C12SSO3Na) and two aromatic redox-active thiosulfates (potassium S-(2,5-dihydroxyphenyl)thiosulfate, QSSO3K, and dipotassium S,S‘-(3,6-dihydroxy-1,2-phenylene)bisthiosulfate, Q(SSO3K)2) and compared the formation and properties of the SAMs prepared from these Bunte Salt...
Fanmin Liu - One of the best experts on this subject based on the ideXlab platform.
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Bunte Salt ch2fsso3na an efficient and odorless reagent for monofluoromethylthiolation
Organic Letters, 2018Co-Authors: Fanmin Liu, Lvqi Jiang, Huangyao QiuAbstract:A practical and efficient monofluoromethylthiolation that employs the typical Bunte Salt, sodium S-(fluoromethyl) sulfurothioate, as the sulfur source is described. This reagent reacts readily with a variety of aryl amines and aryl thiols. The high tolerance of functional groups demonstrates the potential of this reaction. In addition, this method is suitable for the late-stage monofluoromethylthiolation of complex bioactive molecules.
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Bunte Salt CH2FSSO3Na: An Efficient and Odorless Reagent for Monofluoromethylthiolation
2018Co-Authors: Fanmin Liu, Lvqi Jiang, Huangyao QiuAbstract:A practical and efficient monofluoromethylthiolation that employs the typical Bunte Salt, sodium S-(fluoromethyl) sulfurothioate, as the sulfur source is described. This reagent reacts readily with a variety of aryl amines and aryl thiols. The high tolerance of functional groups demonstrates the potential of this reaction. In addition, this method is suitable for the late-stage monofluoromethylthiolation of complex bioactive molecules
Jukka Lukkari - One of the best experts on this subject based on the ideXlab platform.
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organic thiosulfates Bunte Salts novel surface active sulfur compounds for the preparation of self assembled monolayers on gold
Langmuir, 1999Co-Authors: Jukka Lukkari, Minna Meretoja, Ilkka Kartio, K Laajalehto, Markku Rajamaki, And Mia Lindstrom, Jouko KankareAbstract:In this paper, we demonstrate that organic thiosulfates (Bunte Salts) with the general formula R−SSO3M, where R is either an aliphatic or aromatic group and M a monovalent cation, constitute a novel class of surface-active compounds with a sulfur-containing headgroup. Bunte Salts form self-assembled monolayers (SAMs) on gold under anaerobic conditions and chemisorb forming a Au−S bond, in which the chemical nature of sulfur is indistinguishable by X-ray photoelectron spectroscopy (XPS) from gold thiolate formed upon chemisorption of thiols and disulfides. The S−SO3 bond in the thiosulfate is cleaved during adsorption on the gold surface and the sulfite moiety is released. We have prepared one alkyl thiosulfate (sodium S-dodecylthiosulfate, C12SSO3Na) and two aromatic redox-active thiosulfates (potassium S-(2,5-dihydroxyphenyl)thiosulfate, QSSO3K, and dipotassium S,S‘-(3,6-dihydroxy-1,2-phenylene)bisthiosulfate, Q(SSO3K)2) and compared the formation and properties of the SAMs prepared from these Bunte Salt...
D M Lewis - One of the best experts on this subject based on the ideXlab platform.
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the finishing of wool tops with Bunte Salt polyamide polymers
Journal of The Society of Dyers and Colourists, 2008Co-Authors: K R F Cockett, D M LewisAbstract:Hercosett 57 can be readily converted to a Bunte Salt terminated polymer which exhibits different ionic character both in solution and at the fibre surface; in alkaline solution it behaves as an anionic polymer, but in weakly acidic solution it possesses amphoteric properties. Because of this overall change in ionic character the polymer can be applied to chlorinated wool tops from baths set at pH 3.5, in marked contrast to Hercosett 57 where bath pH values of 8.0 are required. The dyeing properties of yarns produced from these tops will be described with special emphasis on the differential dyeing possibilities offered by mixing these yarns with the more usual Hercosett 57 treated yarns. Soiling properties of the new finish have also been evaluated.
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quaternary reactive dyes containing a thioether ethylsulphone group part 1 synthesis of a trimethylammonium ethylsulphide ethylsulphone dye
Coloration Technology, 2003Co-Authors: D M Lewis, L J SunAbstract:This paper describes the synthesis of a reactive dye containing a thioether-ethylsulphone group. The dye was prepared by reaction of a specially synthesised vinylsulphone dye with β-thiolethyltrimethyl-ammonium chloride. The latter was synthesised by the reaction of choline dichloride with sodium thiosulphate; the Bunte Salt thus formed was hydrolysed with aqueous hydrochloric acid to give the required thiol derivative. This reacted readily with a model vinylsulphone dye to give the desired compound.
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the preparation of Bunte Salt terminated surfaceactive agents and their use in wool fabric shrinkproofing
Coloration Technology, 1999Co-Authors: D M LewisAbstract:Model reactive surfactants based on Bunte Salt acetate esters of dodecanol and 1, 12-dodecane diol have been prepared, with mono-, di- and tri-functionality, with respect to the Bunte Salt group. With the exception of the monofunctional Bunte Salt derivative, all these compounds readily polymerise to polydisulphides. When applied to wool fabrics by a pad-batch procedure, in the presence of sodium sulphite, all of these reactive surfactants gave excellent shrink-resist properties, although the amount required varied. The trifunctional derivative was the most effective in terms of the minimum concentration required to achieve shrink resistance.
