CAS: 85-38-1; 3-Nitrosalicylic Acid

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CAS号69-72-7 水杨酸 | CAS号321-14-2 5-氯代水杨酸 | CAS号573-54-6 2-溴-3-硝基苯甲酸 | CAS号3970-35-2 2-氯-3-硝基苯甲酸 | CAS号50-78-2 阿司匹林 | CAS号56-23-5 四氯化碳 | CAS号88-75-5 邻硝基苯酚 | CAS号482-89-3 靛蓝 | CAS号192181-48-9 3-nitro-2-pheno... | CAS号88-75-5 邻硝基苯酚 | CAS号124-38-9 二氧化碳 | CAS号28177-71-1 2-羟基-3-硝基苯甲醇 | CAS号118-75-2 四氯对醌 | CAS号570-23-0 3-氨基邻羟基苯甲酸 | CAS号573-56-8 2,6-二硝基苯酚 | CAS号609-99-4 3,5-二硝基水杨酸 | CAS号22621-41-6 3-硝基水杨酸甲酯 | CAS号20294-48-8 2,4-diiodo-6-ni... | CAS号22621-43-8 2-hydroxy-5-iod...

水杨酸置于3C4H7N2O6S2(1+)*o40Pw12(3-),硝酸体系中,化学反应 0.25H,以95%的收率获得产物3-硝基水杨酸
参考文献:2-甲基-1,3-二硫代咪唑鎓多金属氧酸盐混合催化系统可作为芳族化合物硝化中浓硫酸的等效安全替代品
标题:2-甲基-1,3-二硫代咪唑鎓多金属氧酸盐混合催化系统可作为芳族化合物硝化中浓硫酸的等效安全替代品
摘要:两种杂多酸h 3 Pw 12 O 40的离子液体来源的多金属氧酸盐[mdsim] 3 [pm 12 O 40](其中m = W和mo).n H2O和h 3 Pmo 12 O 40 .Nh 2O是使用2-甲基-1,3-二硫代咪唑鎓氯化物([mdsim] [cl])离子液体和相应的杂多酸合成的.在室温下,在含水介质中,用相应的keggin结构杂多酸(一当量)处理三当量的[mdsim] [cl],以提供呈酸性固体的水稳性离子型多金属氧酸盐.使用光谱学和其他分析技术(包括热分析和hammett酸度研究)对它们进行了完全表征.研究了这些多金属氧酸盐的so 3 H基团固有的布朗斯台德酸性质,用于用69%hno 3硝化芳族化合物在常温和80oc下不使用任何外部浓硫酸.这些强酸性多金属氧酸盐显示出非常好的可回收性和有效的可重复使用性.
DOI:10.1002/aoc.5146

专利信息

专利号:US-6180830-B1
优先权日:1995-11-08
标题 :Method for preparing a bimetallic ruthenium/tin catalyst and a process for the synthesis of aldehydes
发明人：JACQUOT ROLAND
权利人:RHODIA CHIMIE SA
摘要:The present invention relates to a new process for the preparation of a bimetallic ruthenium/tin catalyst. The process for the preparation of a bimetallic ruthenium/tin catalyst according to the invention is characterised by the fact that it consists in carrying out the reduction of a ruthenium complex having an electrovalency of -4 and a coordination number of 6, the ligands being either a halogen atom or an anion or a tin halide. The catalyst is further employed for the preparation of aldehydes by reduction, in the vapor phase, of carboxylic acids, esters and anhydrides.

专利号:US-2004110228-A1
优先权日:2002-04-01
标 题:Combinatorial organic synthesis of unique biologically active compounds
发明人：MCALPINE SHELLI R; TAYLOR RACHEL E; BOLLA MEGAN L; SEGALL ANCA M
摘要:The invention provides a method for making a combinatorial library of cyclic compounds, such as Holliday junction-trapping compounds, comprising the steps of (a) obtaining a plurality of trimers according to the generic structure X 1- X 2- X 3 , wherein X 1 , X 2 and X 3 can be independently any naturally or nonnaturally occurring amino acids or peptidomimetics thereof; (b) optionally coupling a spacer S to the trimer at either end; (c) cyclizing two trimers or trimer-spacer conjugates in a head-to-tail orientation; thereby obtaining a combinatorial library of compounds, wherein the library does not include an unmodifed or naturally occurring Holliday Junction-trapping compounds. The invention additionally provides methods macrocyclic compounds that are synergimycin derivatives.

专利号:US-4764263-A
优先权日:1987-05-18
标 题:Electrochemical synthesis of substituted aromatic amines in basic media
发明人：GREGORY THOMAS D; STUTTS KENNETH J
权利人:DOW CHEMICAL CO
摘要:Substituted amino aromatic compounds such as 3-amino-4-hydroxybenzoic acid are prepared by electrolytically reducing the corresponding nitro aromatic compound in a basic medium at temperatures below 60° C. and current densities greater than 50 milliamps per square centimeter. The aminohydroxybenzoic acids are useful in the preparation of polybenzoxazoles which are used to make fibers and composites having high strength and thermal stability.

专利号:WO-2023151188-A1
优先权日:2022-02-08
标题 :Green synthesis method of antiviral drug intermediate
发明人：XIA BIN; WANG JIAMING; ZHANG XIANSHU; CAI LINGLI; WANG ZIKUN; CAO MING; YANG SHAOBO; GAO QIANG; ZHENG BAOFU
权利人:SHANGHAI HAOYUAN CHEMEXPRESS CO LTD
摘要:The present application provides a green synthesis method of an antiviral drug intermediate. The method comprises: in the presence of a catalyst, adding zinc powder into a compound as represented by a formula II and performing a cyclization reaction with dihaloalkane to generate a compound as represented by a formula I, zinc halide being not required to be added to the cyclization reaction, wherein R1 is selected from H or an amino-protecting group, and R2 is selected from substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C6-C14 aryl or substituted or unsubstituted C7-C14 aralkyl; R3 and R4 are each independently selected from hydrogen, substituted or unsubstituted C1-C10 alkyl, and R3 and R4 can be connected to form a fatty ring containing 3-10 carbon atoms. The synthesis method is short in steps, dangerous and expensive materials are not used, a reaction conversion rate is high, reaction time is short, and operation is easy and convenient. Production costs and post-treatment costs are reduced, and a cost advantage is obvious. The method can be widely used for preparing antiviral drugs of nirmatrelvir, boceprevir or narlaprevir, and has good market prospects.

专利号:US-7651997-B2
优先权日:2000-04-07
标 题 :Deoxo-proline-containing tamandarin and didemnin analogs, dehydro-proline-containing tamandarin and didemnin analogs, and methods of making and using them
发明人：JOULLIE MADELEINE M; LIANG BO; DING XIAOBIN
权利人:UNIV PENNSYLVANIA
摘要:The present invention relates to tamandarin and didemnin analogs which have a deoxo-proline residue or a dehydro-proline residue in their structure. These analogs are useful as anti-cancer agents and for other purposes. Methods of making these analogs and methods of using them as inhibitors of protein synthesis, cell growth, and tumorigenesis and as enhancers of apoptosis are also provided.

专利号:EP-0539274-B1
优先权日:1991-10-24
标题 :Method for the synthesis of aldehydes and of their derivatives