CAS: 1892-29-1; Bis(2-Hydroxyethyl) Disulfide

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69981-39-1 1892-29-1 2222151-21-3

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📜2-巯基乙醇置于水,一氧化二氮体系中,化学反应生成2-羟乙基二硫化物
参考文献:Linac / Laser测定巯基乙醇,半胱胺和n-乙酰基-1-半胱氨酸水溶液中巯基与巯基的巯基和羟自由基反应的绝对速率常数†
标题:Linac / Laser测定巯基乙醇,半胱胺和n-乙酰基-1-半胱氨酸水溶液中巯基与巯基的巯基和羟自由基反应的绝对速率常数†
摘要:合并的脉冲辐解/光解激光的技术已被用于研究巯基乙醇,半胱胺,以及二硫化自由基阴离子形成反应ñ乙酰基升-半胱氨酸在7.0-13.0的ph范围内.巯基的一次电子氧化形成的瞬态自由基阴离子的光解扰动了二硫键自由基阴离子/噻吩基自由基的平衡,从而可以从吸收漂白和随后的回收中唯一确定巯基自由基与母体巯基反应的速率常数. .将这些依赖于ph的值与测得的二硫自由基阴离子平衡常数结合起来,以计算一阶二硫自由基阴离子解离速率常数.通过计算机模拟已建立的二硫键自由基生长机理的模型,计算了羟基自由基与各个巯基物质反应的速率常数.将这些值与先前报道的通过竞争动力学确定的值进行对比.
Doi:10.1021/jp953067V

专利信息

专利号:US-8299206-B2
优先权日:2007-11-15
标题:Method of synthesis of morpholino oligomers
发明人：FOX CHRISTINA MARY JOSEPHINE; WELLER DWIGHT D
权利人:FOX CHRISTINA MARY JOSEPHINE; WELLER DWIGHT D; AVI BIOPHARMA INC
摘要:Improved methods are described for solid-phase synthesis of morpholino oligomers, in which a protected morpholino ring nitrogen is deprotected between coupling steps using a heterocyclic amine salt in a trifluoroethanol-containing solvent, where the salt is a salt of a heterocyclic amine, having a pKa in the range of 1-4 in its protonated form, with an acid selected from a sulfonic acid, trifluoroacetic acid, and hydrochloric acid. Examples are 3-chloropyridinium methanesulfonate (CPM) and 4-cyanopyridinium trifluoroacetate (CYTFA).

专利号:US-8076476-B2
优先权日:2007-11-15
标 题 :Synthesis of morpholino oligomers using doubly protected guanine morpholino subunits
发明人：REEVES MATTHEW DALE; WELLER DWIGHT D; LI YONGFU
权利人:REEVES MATTHEW DALE; WELLER DWIGHT D; LI YONGFU; AVI BIOPHARMA INC
摘要:Morpholino compounds are provided having the structure: n nwheren R 1 is selected from the group consisting of lower alkyl, di(lower alkyl)amino, and phenyl; R 2 is selected from the group consisting of lower alkyl, monocyclic arylmethyl, and monocyclic (aryloxy)methyl; R 3 is selected from the group consisting of triarylmethyl and hydrogen; and Y is selected from the group consisting of: a protected or unprotected hydroxyl or amino group; a chlorophosphoramidate group; and a phosphorodiamidate linkage to the ring nitrogen of a further morpholino compound or a morpholino oligomer. Such compounds include doubly protected morpholino guanine (MoG) monomers. Also described is their use in synthesis of morpholino oligomers.

专利号:US-2021206899-A1
优先权日:2020-09-14
标 题 :Synthesis of janus dendrimers
发明人：NAJAFI FAEZEH; Salami-Kalajahi Mehdi; ROGHANI-MAMAQANI HOSSEIN
权利人:NAJAFI FAEZEH; SALAMI KALAJAHI MEHDI; ROGHANI MAMAQANI HOSSEIN; SAHAND UNIV OF TECHNOLOGY
摘要:A method for synthesizing Janus dendrimers, including synthesizing a hydrophobized dendrimer by reacting a dendrimer with a carboxylic acid, forming a first dendron with a thiol group by splitting the hydrophobized dendrimer through breaking a disulfide bond of the core into thiol groups, forming a reactive dendron by reacting the thiol group of the first dendron with methyl acrylate and a radical initiator, synthesizing a primary core by reacting the reactive dendron with ethylenediamine (EDA), and forming a Janus dendrimer by synthesizing a second dendron on the primary core. The hydrophobized dendrimer includes a core containing a disulfide bond.

专利号:US-2003232952-A1
优先权日:2001-02-02
标题:Design and synthesis of instant - degradable plastics
发明人：ROSEN OREN
摘要:A novel class of instant degradable synthetic polymeric plastics having the characteristics and properties of conventional forms of plastics is developed by providing a new application advantage of incorporating latent, labile, dormant chemical bond nuclei such as disulfide and sulfenyl derivatives of the plastic compounds with latent nucleophilic properties. The special advantage of the instant degradable polymers over the existing biodegradable and other degradable polymer counterparts, is their engineering and design, which makes the kinetics of their degradation instant, and the chemical and physical properties of their by-products allows soluble dissolution into non-toxic aqueous solvent media, thus enabling a practical treatment of waste and avoiding bio-hazardous pollution of the environment. These novel plastic products are made from a variety of compositions of polymers and their compatible nontoxic modifiers. The resulting novel instant degradable plastic products retain latent dormant solubility properties that are triggered upon mild chemical reaction, thus enabling cost effective and facile recycling of plastic refuge.

专利号:US-10337030-B2
优先权日:2016-07-07
标 题 :Microbially-mediated method for synthesis of metal chalcogenide nanoparticles
发明人：MOON JI WON; PHELPS TOMMY JOE; OREMLAND RONALD; GRAHAM DAVID E; IVANOV ILIA N; JACOBS CHRISTOPHER B; JANG GYOUNG GUG; KIDDER MICHELLE K; JOSHI POORAN C; ARMSTRONG BETH L
权利人:UT BATTELLE LLC; U S GEOLOGICAL SURVEY
摘要:A method for producing metal chalcogenide nanoparticles, the method comprising: (i) producing hydrogen chalcogenide-containing vapor from a microbial source, wherein said microbial source comprises: (a) chalcogen-reducing microbes capable of producing hydrogen chalcogenide vapor from a chalcogen-containing source; (b) a culture medium suitable for sustaining said chalcogen-reducing microbes; (c) at least one chalcogen-containing compound that can be converted to hydrogen chalcogenide vapor by said chalcogen-reducing microbes; and (d) at least one nutritive compound that provides donatable electrons to said chalcogen-reducing microbes during consumption of the nutritive compound by said chalcogen-reducing microbes; and (ii) directing said hydrogen chalcogenide-containing vapor into a metal-containing solution comprising a metal salt dissolved in a solvent to produce metal chalcogenide nanoparticles in said solution, wherein said chalcogen is sulfur or selenium, and said chalcogenide is sulfide or selenide, respectively. The invention is also directed to metal chalcogenide nanoparticle compositions produced as above and having distinctive properties.

专利号:US-4889926-A
优先权日:1987-06-12
标题:Method for the synthesis of (2'R)-4'-O-tetra-hydropyranyladriamycim using 14-chloro-daunomycin as an intermediate
发明人：MACHINAMI TOMOYA; NAKAMURA TAKESHI; NISHIHATA KEN; KONDO SHINICHI; TAKEUCHI TOMIO
权利人:ZAIDAN HOJIN BISEIBUTSU
摘要:A new compound, i.e., 14-chlorodaunomycin, and its method of preparation are provided. The new compound, useful as an antitumor agent and as an intermediate in the preparation of (2'R)-4'-O-tetrahydropyranyladriamycin, is obtained by reaction of daunomycin with an alkyl ortho-formate and a brominating agent to produce a 14-bromo-13-dialkylketaldaunomycin, hydrolysis of the latter compound, then adding an excess of a solid metal/chloride to produce an acid addition salt of 14-chlorodaunomycin and concurrently salting out the latter compound from the reaction solution, followed by recovering the 14-chlorodaunomycin acid addition salt.