CAS: 95-82-9; 2,5-Dichloroaniline

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CAS号89-61-2 2,5-二氯硝基苯 | CAS号135145-90-3 2,5-二氯苯硼酸 | CAS号108-42-9 间氯苯胺 | CAS号95-51-2 2-氯苯胺 | CAS号305-15-7 2,5-二氯苯肼 | CAS号6626-75-1 N-(2,5-Dichloro... | CAS号106-46-7 1,4-二氯苯 | CAS号110-86-1 吡啶 | CAS号588-07-8 3'-氯乙酰苯胺 | CAS号29551-86-8 N-chloro-m-chlo... | CAS号10586-68-2 4-[(4-amino-2,5... | CAS号110605-03-3 N-(2,5-dichloro... | CAS号4949-85-3 2,4-二氯苯基硫脲 | CAS号37680-65-2 2,2′,5-三氯联苯 | CAS号348-59-4 2,5-二氯氟苯 | CAS号38380-02-8 2,2',3,4,5'-戊氯联苯 | CAS号3507-41-3 5-氯-2-(甲硫基)苯并噻唑 | CAS号4524-78-1 6-溴-2,4,5-三氯苯酚 | CAS号608-27-5 2,3-二氯苯胺 | CAS号35693-99-3 异辛烷/甲苯中PCB52溶液标准物质

1,4-二氯苯置于硫酸,硝酸,Platinum On Activated Charcoal,氢气体系中,用 溶剂黄146 作为反应溶剂,以95%的收率获得产物2,5-二氯苯胺
参考文献:制备3,6-二氯-2-羟基苯甲酸的新方法,这是合成除草剂麦草畏的倒数第二个中间体
标题:制备3,6-二氯-2-羟基苯甲酸的新方法,这是合成除草剂麦草畏的倒数第二个中间体
摘要:草甘膦[N-(膦酰基甲基)甘氨酸]是一种广谱的芽后除草剂,是全球使用最广泛的农用化学品之一.在过去的30年中,抗草甘膦的杂草得到了发展,这对种植者和农作物科学家构成了巨大的挑战,导致农作物产量降低和成本增加.3,6-二氯-2-甲氧基苯甲酸(麦草畏)是xtendimax®的活性成分,Xtendimax®是拜耳作物科学公司开发的用于控制阔叶杂草(包括抗草甘膦的物种)的独立除草剂.3,6-二氯-2-羟基苯甲酸(3,6-Dcsa)是麦草畏合成中的倒数第二个中间体.现有的麦草畏制造路线利用高温高压kolbe-Schmitt羧化反应制备3,6-Dcsa.这封信中描述的是一种新的非柯尔布-施密特流程,该流程准备3,
DOI:10.1016/j.Tetlet.2019.03.024

专利信息

专利号:WO-9410327-A1
优先权日:1992-10-28
标 题 :Enzymatic synthesis of polyaniline
发明人：ZEMEL HAYA; QUINN JOHN F
权利人:ALLIED SIGNAL INC
摘要:This invention relates to a process for the enzymatic synthesis of electrically conductive substituted and unsubstituted polyanilines. Aniline monomer(s), an oxidizing agent, which comprises an enzyme and an electron acceptor, and an acidifying agent are reacted together to form polyanilines.

专利号:US-5243032-A
优先权日:1989-06-22
标题:Preparation of azo pigments with low pcb content by coupling in the presence of olefins
发明人：RIEPER WOLFGANG
权利人:HOECHST AG
摘要:The production which is customary in practice of monoazo compounds based on dichloro- and trichloroanilines or disazo compounds of the chlorinated biphenyl series by conventional coupling methods meets with difficulties in that the resulting pigments are contaminated by traces of polychlorinated biphenyls. n According to the invention, it has now been found that by addition of water-soluble olefins of the type ##STR1## (R =H, alk or Oalk; X =--COOR 1 , --CONHR 2 or --NR 3 COR 4 ) n in the azo coupling, the side reactions which form PCBs can be decidedly suppressed during synthesis of the pigments.

专利号:US-2005080260-A1
优先权日:2003-04-22
标 题 :Preparation of prodrugs for selective drug delivery
发明人：MILLS RANDELL L; WU GUO-ZHANG
摘要:Synthesis of a chemical compound having the formula A-B-C that may serve for applications such as drug delivery where A is a chemiluminescent, moiety, B is a photochromic moiety, and C is a biologically active moiety where A-B-C may serve as a prodrug. Novel synthetic methods of the present invention to form the prodrug comprised the steps of (1) forming a benzophenone, (2) forming a diaryl ethylene, (3) attaching a phthalimide moiety to at least one of the aryl groups of the ethylene to form a phthalimide-ethylene conjugate, (4) condensing two ethylene-phthalimide conjugates to form a phthalimide-pentadiene conjugate, (5) converting the phthalimide to the phthalhydrazide by reaction with hydrazine to form a carrier compound according to the present invention, and (6) reacting the carrier compound with an nucleophilic moiety of the drug to form the corresponding prodrug. Alternatively the carrier can be prepared by using the halo-substituted diaryl ethylene to make the corresponding cationic leuco dye-like compound with known methods. The cationic compound then is protected by reacting with a nucleophile and coupled with the aminophathalimide by palladium-catalyzed amination to form the protected phthalimide-pentadiene conjugate. The latter is refluxed with hydrazine to convert its phthalimide to the phthalhydrazide and acidified to give the carrier. An additional aspect of the present invention relates to the use of these compounds as antiviral agents for the treatment of viral infections such as HIV and as anticancer agents for the treatment of cancers such as bowel, lung, and breast cancer.

专利号:US-4897484-A
优先权日:1986-12-19
标题 :Process for the preparation of substituted pyridines
发明人：WEIS CLAUS D; SUTTER PETER
权利人:CIBA GEIGY CORP
摘要:A process is described for the preparation of compounds of the formula (1) in which R and X are as defined in claim 1. The compounds of the formula (1) are valuable intermediates in the synthesis of triarylmethane dyes and triarylmethanelactones.

专利号:US-10557210-B2
优先权日:2014-02-24
标题 :Direct electrochemical synthesis of doped conductive polymers on metal alloys
发明人：KINLEN PATRICK JOHN; LAWLESS LAWRENCE MICHAEL
权利人:BOEING CO
摘要:This disclosure relates generally to the discovery of improved methods of reducing corrosion on metals and metal alloys without using hexavalent chromium reagents. More particularly, the disclosure relates to preparing corrosion resistant metals using doped conducting polymers such as polyaniline (PANI) on metal alloys such as aluminum alloys.

专利号:WO-2024155469-A1
优先权日:2023-01-19
标 题:One step reaction for the catalytic synthesis of cyclic urea derivatives
发明人：ZHOU HUI
权利人:HUNTSMAN PETROCHEMICAL LLC
摘要:A process for preparing a cyclic urea derivative by reacting an alkylene carbonate and a primary amine in the presence of a metal oxide catalyst to form the cyclic urea derivative.