CAS: 599-91-7; Propyl 4-Methylbenzenesulfonate

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CAS号71-23-8 正丙醇 | CAS号98-59-9 对甲苯磺酰氯(PTSC) | CAS号104-15-4 对甲苯磺酸 | CAS号1789-95-3 Propylphosphoni... | CAS号80-48-8 对甲苯磺酸甲酯 | CAS号111-43-3 丙醚 | CAS号26908-82-7 对甲基苯磺酸乙酸酐 | CAS号923-99-9 亚磷酸三丙酯 | CAS号513-08-6 磷酸三丙酯 | CAS号3898-41-7 1,4-二正丙氧基苯 | CAS号35288-44-9 3-硝基-4-丙氧基苯甲酸 | CAS号4250-81-1 1-苯基-1-戊炔 | CAS号629-19-6 二丙基二硫 | CAS号6410-56-6 Methylphosphoni... | CAS号683-25-0 Methyl propyl m... | CAS号80-48-8 对甲苯磺酸甲酯 | CAS号124-18-5 正癸烷 | CAS号112-95-8 二十烷 | CAS号629-50-5 正十三烷

📜甲苯置于氯磺酸,Sodium Chloride体系中,化学反应生成 4-甲基苯磺酸丙酯
参考文献:芳烃磺酰氯的丙烷分解:磺酰硫处的亲核取代
标题:芳烃磺酰氯的丙烷分解:磺酰硫处的亲核取代
摘要:我们研究了在303-323 K时丙-1-醇和丙-2-醇对芳烃磺酰氯的溶剂分解机理.动力学曲线适合一阶动力学.反应性随供电子取代基的增加而增加.芳烃磺酰氯的邻烷基取代衍生物显示出增加的反应性,但这种"正向"邻效应的起源仍不清楚.可能,邻位甲基限制了绕c键的旋转,从而促进了亲核试剂的攻击.就亲核性空间效应而言,未发现丙-1-醇和丙-2-醇的相关反应性变化.所有底物的等动力学关系的存在表明该系列的单一机制.两种醇中所有底物的溶剂分解反应均显示等速温度(t Iso)接近工作温度范围,这表明该过程受到次级反应性因素的影响,该因素可能是ts中的空间性质.溶剂化在该反应中起重要作用,调节反应性.在一些情况下,存在吨-Bu代替我在对位位置导致第一溶剂化壳的变化,从而增加了反应能量(约1 Kj.mol-1).所得结果表明,芳烃磺酰氯对丙-1-醇和丙-2-醇的溶剂化动力学机制与在meoh和etoh中相同,其中双分子亲核取代(s
DOI:10.1002/poc.3753

专利信息

专利号:US-11161827-B2
优先权日:2019-04-05
标 题 :Catalytic systems for stereoselective synthesis of chiral amines by enantiodivergent radical C—H amination
发明人：Zhang xiao-xiang; Lang kai
权利人:TRUSTEES BOSTON COLLEGE; THE TRUSTEES OF BOSTON COLLEGE
摘要:In one aspect, the disclosure relates to a mode of asymmetric induction in radical processes based on sequential combination of enantiodifferentiative H-atom abstraction and stereoretentive radical substitution. Also disclosed is an asymmetric system for stereoselective synthesis of strained 5-membered cyclic sulfamides via radical 1,5-C—H amination of sulfamoyl azides. The disclosed metalloradical system can control the degree and sense of asymmetric induction in the catalytic radical C—H amination in a systematic manner. The disclosed system is applicable to a broad scope of substrates with different types of C(sp 3 )—H bonds and exhibits reactivity and selectivity, providing access to both enantiomers of useful 5-membered cyclic sulfamides in a highly enantioenriched form. Also disclosed are catalysts useful in these processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

专利号:US-9085518-B2
优先权日:2011-10-14
标题 :Method for the synthesis of 18F-labelled molecules
发明人：NAIRNE ROBERT JAMES DOMETT; BHALLA RAJIV; KHAN IMTIAZ; BROWN JANE; WILSON ANTHONY; BLACK ANDRES
权利人:GE HEALTHCARE LTD
摘要:The present invention provides a method for the synthesis of 18F-labelled biomolecules, which is amenable to automation. The present invention also provides a cassette for automating the method of the invention. The method of the present invention provides numerous advantages over the prior art methods. One less purification step is required as compared with known methods. Also, in a preferred embodiment, one less reagent is required as a particular reagent is employed in two different steps. The chemistry process is thereby simplified, the cost of goods is reduced and the burden of validation and documentation of reagents required for GMP clinical production is minimized.

专利号:US-9512096-B2
优先权日:2011-12-22
标题 :Synthesis of amine substituted 4,5,6,7-tetrahydrobenzothiazole compounds
发明人：CHEN WEIRONG; HUMORA MICHAEL; KWOK DAW-LONG ALBERT; KIESMAN WILLIAM F; IRDAM ERWIN AYANDRA
权利人:KNOPP BIOSCIENCES LLC; KNOPP BIOSCIENCES LLP
摘要:The present invention is related to an improved process for the preparation of amino-substituted 4,5,6,7-tetrahydrobenzothiazole compounds of formula I, such as the compound 2-amino-4,5,6,7-tetrahydro-6-(n-propylamino)benzothiazole. The invention further relates to an improved synthesis of (R)-2-amino-4,5,6,7-tetrahydro-6-(n-propylamino)benzothiazole. The invention also relates to the methods and intermediates associated with the synthetic process.

专利号:US-9125954-B2
优先权日:2011-10-14
标 题 :Method for the synthesis of 18F-labelled biomolecules
发明人：BHALLA RAJIV; WILSON ANTHONY; KHAN IMTIAZ; BROWN JANNE
权利人:GE HEALTHCARE LTD
摘要:The present invention provides a method for the synthesis of 18 F-labelled biomolecules, which is amenable to automation. The present invention also provides a cassette for automating the method of the invention. The method of the present invention provides numerous advantages over the prior art methods. One less purification step is required as compared with known methods. Also, one less reagent is required as a particular reagent is employed in two different steps. The chemistry process is thereby simplified, the cost of goods is reduced and the burden of validation and documentation of reagents required for GMP clinical production is minimized.

专利号:US-2012189547-A1
优先权日:2009-10-08
标 题 :[18f] labelled analogues of flumazenil as in vivo imaging agents
发明人：WOODCRAFT JOHN; JONES CLARE L; GAETA ALESSANDRA; TRIGG WILLIAM JOHN; JONES PAUL ALEXANDER; PLANT STUART
权利人:WOODCRAFT JOHN; JONES CLARE L; GAETA ALESSANDRA; TRIGG WILLIAM JOHN; JONES PAUL ALEXANDER; PLANT STUART
摘要:The present invention provides radiofluorinated compounds useful for in vivo imaging GABA A receptors. Also provided by the present invention is a method of synthesis for the radiofluorinated compounds of the invention, in particular an automated method of synthesis. A further aspect of the invention is a cassette suitable for carrying out the automated method of synthesis of the invention.

专利号:US-8519148-B2
优先权日:2007-03-14
标题 :Synthesis of chirally purified substituted benzothiazole diamines
发明人：RAJE PRASAD; GADIKOTA RAJENDRAKUMAR REDDY; CHEN JIAN-XIE; LAPINA OLGA V; MCCALL JOHN M
权利人:RAJE PRASAD; GADIKOTA RAJENDRAKUMAR REDDY; CHEN JIAN-XIE; LAPINA OLGA V; MCCALL JOHN M; KNOPP NEUROSCIENCES INC
摘要:Methods for preparing chirally purified substituted 4,5,6,7-tetrahydro-benzothiazole diamines such as, for example, (6R)2-amino-4,5,6,7-tetrahydro-6-(propylamino)benzothiazole and purifying a dominant enantiomer of substituted 4,5,6,7-tetrahydro-benzothiazole diamines from entantiomerically enriched mixtures of substituted 4,5,6,7-tetrahydro-benzothiazole diamines are provided herein.