CAS: 81-08-3; 2-Sulfobenzoic Anhydride

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CAS号6939-89-5 2-磺基苯甲酸单铵盐 | CAS号632-25-7 2-磺基苯甲酸 | CAS号81-07-2 糖精 | CAS号128-44-9 糖精钠 | CAS号34684-21-4 o-chlor°Carbony... | CAS号295785-44-3 2-ethoxysulfony... | CAS号71-43-2 苯 | CAS号32638-88-3 焦棓酚红 | CAS号26638-43-7 2-(氯磺酰基)苯甲酸甲酯 | CAS号2800-80-8 溴酚红 | CAS号76-60-8 溴甲酚绿 | CAS号861304-71-4 2-(4-hydroxy-5-... | CAS号76-61-9 百里酚蓝 | CAS号4430-20-0 氯酚红 | CAS号143-74-8 苯酚红 | CAS号2303-01-7 间甲酚紫 | CAS号125-31-5 二甲苯酚蓝

硫代水杨酸置于磺酰氯体系中,用 乙腈 作为反应溶剂,化学反应 1.5H,以87.4%的收率获得产物2-磺基苯甲酸酐
参考文献:一种酰基磺酸酯类化合物的制备方法
标题:一种酰基磺酸酯类化合物的制备方法
摘要:本发明属于化工领域,公开了一种酰基磺酸酯类化合物的制备方法.该方法包括以下步骤:(1)在有机溶剂中,酰氯化试剂的作用下,将含有巯基的化合物进行磺酰氯化或磺酸化,然后利用精馏,萃取或沉降的方法分离得到磺酰氯化或磺酸化的产物;(2)利用磺酰氯化或磺酸化的化合物与含羧基的化合物缩合制备酰基磺酸酯类化合物粗品;(3)通过低沸点溶剂对步骤(2)所得酰基磺酸酯类化合物粗品进行洗涤得到纯化后的酰基磺酸酯类化合物.本发明采用的原料简单易得,成本较低,合成路线简单,条件温和,但反应活性高,反应转化率高达90%以上,且制备的多种酰基磺酸酯化合物纯度都高.

专利信息

专利号:US-6159673-A
优先权日:1996-07-17
标 题:Oxonol compound, light-sensitive material and process for the synthesis of oxonol compound
发明人：NISHIGAKI JUNJI; DEGUCHI YASUAKI
权利人:FUJI PHOTO FILM CO LTD
摘要:An oxonol compound is represented by the following formula (I): in which Z is an atomic group that forms a cyclic amide ring; each of W1 and W2 independently is an atomic group that forms an acidic nucleus ring; and M is a cation. Other oxonol compounds, a light-sensitive material containing an oxonol compound and a process for the synthesis of an oxonol compound are also disclosed.

专利号:EP-1473330-B1
优先权日:1996-07-17
标题:Process for the synthesis of oxonol compound
发明人：NISHIGAKI JUNJI; DEGUCHI YASUAKI
权利人:FUJI PHOTO FILM CO LTD
摘要:An oxonol compound is represented by the following formula (I): in which each of Z, W<1> and W<2> independently is an atomic group that forms a heterocyclic ring; and M is a cation. A process for the synthesis of an oxonol compound is disclosed.

专利号:US-4042600-A
优先权日:1972-10-17
标 题 :Pyrolysis of 2-sulfochloride benzoates
发明人：DIPIPPO CARMINE A
权利人:SCOTT PAPER CO
摘要:Ortho-sulfobenzoic anhydride is synthesized by pyrolysis of the 2-sulfochloride benzoates. The benzoate intermediates are readily prepared by reacting either the esters of dithiodibenzoic acid with chloride water or the 2-diazonium chloride benzoates with sulfur dioxide. The invention also provides for the total synthesis of saccharin, free of bitter tasting contaminants, from such reactants, the ultimate step in such synthesis being the ammonolysis of the o-sulfobenzoic anhydride.

专利号:US-6229055-B1
优先权日:1996-04-12
标题 :Synthesis of fluorinated xanthene derivatives
发明人：KLAUBERT DIETER H; GEE KYLE R
权利人:MOLECULAR PROBES INC
摘要:Facile syntheses for fluorinated resorcinol and aminophenol derivatives are provided that yield isomer-free products in good yield. These novel methods use generally available precursors and standard laboratory reagents and equipment to reproducibly produce these synthetically useful reagents in relatively large quantities. The resulting fluorinated resorcinols and aniinophenols possess utility in the preparation of fluorinated fluorescein and rhodol dyes.

专利号:US-4408058-A
优先权日:1982-05-26
标题 :Preparation of ortho-sulfobenzoic acid anhydride by catalyzed thermolysis
发明人：MITCHELL III MARK L; CARR RICHARD P
权利人:SHERWIN WILLIAMS CO
摘要:This invention relates to a process for the synthesis of ortho-sulfobenzoic acid anhydride which comprises heating a 2-sulfohalide benzoate in the presence of a catalytic amount of a Friedel-Crafts catalyst. Especially preferred in the practice of this invention is the reaction of ortho-carbomethoxybenzenesulfonyl chloride in the presence of a zinc or iron halide to produce ortho-sulfobenzoic acid anhydride.

专利号:US-7579427-B2
优先权日:2004-06-30
标 题 :Synthesis of poly(arylene)s copolymers containing pendant sulfonic acid groups bonded to naphthalene as proton exchange membrane materials
发明人：GAO YAN; GUIVER MICHAEL D; ROBERTSON GILLES P
权利人:CA NAT RESEARCH COUNCIL
摘要:A new series of wholly aromatic poly(arylene ether ether ketone ketone)s containing pendant sulfonic acid groups (SPAEEKK) were conveniently prepared by potassium carbonate mediated nucleophilic polycondensation reactions of inexpensive commercially available monomers: 1,3-bis(4-fluorobenzoyl)benzene (BFBB), sodium 6,7-dihydroxy-2-naphthalenesulfonate (DHNS), and 4,4′-biphenol or hydroquinone in N-methyl-2-pyrrolidone (NMP) at 170° C. FT-IR and NMR were used to characterize the structures and the sulfonate or sulfonic acid contents (SC) of the polymers. Flexible membrane films were obtained by casting N,N-dimethylacetamide (DMAc) solutions of copolymers. Membrane films in acid form were then obtained by treating the sodium form membrane films in 2 N sulfuric acid at room temperature. Glass transition temperatures (T g s) and decomposition temperatures (T d s) of SPAEEKKs in both sodium and acid forms were determined. Water uptake and swelling ratio values increased with SCs and temperatures. The proton conductivities of acid form membrane films increased with SC value and temperature and reached 5.6×10 −2 S/cm at 100° C. for SPAEEKK-100.