CAS: 147-82-0; 2,4,6-Tribromoaniline

上下游产品

CAS号106-40-1 对溴苯胺 | CAS号615-57-6 2,4-二溴苯胺 | CAS号118-92-3 邻氨基苯甲酸 | CAS号1972-28-7 偶氮二甲酸二乙酯 | CAS号615-36-1 2-溴苯胺 | CAS号121-57-3 对氨基苯磺酸 | CAS号412027-33-9 4-amino-3,5-dib... | CAS号19617-84-6 N-(4-benzoylphe... | CAS号26733-18-6 (4-amino-3,5-di... | CAS号103068-20-8 1-溴-3,5-二苯基苯 | CAS号488-48-2 四溴对苯醌 | CAS号2973-00-4 dibromo(dinitro... | CAS号634-89-9 1,2,3,5-tetrabr... | CAS号88-89-1 苦味酸 | CAS号291539-77-0 2-Amino-4,5-dim... | CAS号827-94-1 2,6-二溴-4-硝基苯胺 | CAS号874-17-9 2,6-二溴-4-氯苯胺 | CAS号6864-20-6 2,4,6-三苯基苯胺

对氨基苯磺酸置于n-溴代丁二酰亚胺(Nbs)体系中,化学反应 0.17H,以92%的收率获得2,4,6-三溴苯胺
参考文献:自动化磨石化学:使用 N-卤代琥珀酰亚胺的 Peg 辅助化学计量控制卤化酚和苯胺的简单易行方法
标题:自动化磨石化学:使用 N-卤代琥珀酰亚胺的 Peg 辅助化学计量控制卤化酚和苯胺的简单易行方法
摘要:一种简单的电动研钵-研杵用于开发一种绿色简便的机械化学路线,以 Peg-400 作为研磨助剂,通过液体辅助研磨实现酚类和苯胺的无催化剂卤化.通过控制n-卤代琥珀酰亚胺(nxs,X = Br,I 和氯).据观察,Peg-400 在控制底物的反应性和提供更好的区域选择性方面起关键作用.对于具有游离o-和p的芳族底物,观测到几乎唯一的对位选择性-单卤代和二卤代的位置.众所周知,当使用 3 Equiv 的 Nxs 时,在水杨酸和邻氨基苯甲酸(或对氨基苯磺酸)的情况下观测到脱羧(或脱磺化)导致 2,4,6-三卤代产物.简单的仪器,无金属方法,成本效益,原子经济性,反应时间短和反应条件温和是这种环境可持续的机械化学协议的一些显着优点.
Doi:10.3762/bjoc.18.100

专利信息

专利号:US-2006052577-A1
优先权日:2001-02-06
标题:Methods of synthesis of polymers and copolymers from natural products
发明人：SWIFT GRAHAM; WESTMORELAND DAVID G; HUGHES KATHLEEN
权利人:SWIFT GRAHAM; WESTMORELAND DAVID G; HUGHES KATHLEEN
摘要:Described are polymers and copolymers containing sorbitol, citric acid, starch, aspartic acid, succinic anhydride, adipic acid mixtures thereof, methods of their synthesis and their uses.

专利号:US-4705866-A
优先权日:1985-12-26
标 题 :Synthesis of N-halogenated phenyl maleimide compounds with tin containing catalysts
发明人：GASTINGER ROBERT G
权利人:ATLANTIC RICHFIELD CO
摘要:A process for the preparation of N-brominated or N-chlorinated phenylmaleimide by reacting maleic anhydride and a brominated or chlorinated aniline compound at temperatures of from about 100 DEG C. to about 210 DEG C. in the presence of tin containing catalyst compound and optionally an inert solvent.

专利号:US-6365772-B1
优先权日:1995-05-30
标题 :Facile synthesis of phosphonomethylglycine from phosphonomethyliminodiacetic acid
发明人：CULLEN BARRY A; PARKER BRIAN A
权利人:HAMPSHIRE CHEMICAL CORP
摘要:A process for the preparation of phosphonomethylglycine in nearly quantitative yields which eliminates the use of a noble metal co-catalyst and its concomitant problems. The oxygen-containing gas is replaced with the much more chemically active hydrogen peroxide, which in combination with activated carbon, oxidizes the PMIDA to PMG in very high yield. The amount of oxidant allowed to react with PMIDA is a function of the concentration of oxygen in the gaseous reaction products, and is controlled by monitoring that concentration. In another embodiment, the oxidizing agent is an oxygen-containing gas. In either case, the concentration of oxygen in the gaseous reaction product is monitored to determine the end point of the reaction.

专利号:US-5565517-A
优先权日:1994-11-16
标题:Synthesis of organic polysulfide polymers
发明人：EFNER HOWARD F; SHAW JAMES E
权利人:PHILLIPS PETROLEUM CO
摘要:A process for preparing an organic polysulfide polymer, such as polyethylene trisulfide, is provided which comprises contacting a dimercaptan such as 1,2-ethanedithiol with elemental sulfur using a basic catalyst wherein the dimercaptan, elemental sulfur, and basic catalyst are each present in an effective amount to effect the preparation of the organic polysulfide polymer. A process for controlling the molecular weight of an organic polysulfide polymer is also provided which comprises contacting a mercaptan with a dimercaptan and sulfur, in the presence of a basic catalyst, under conditions sufficient to prepare an organic polysulfide polymer.

专利号:US-4477389-A
优先权日:1982-10-25
标 题 :Polyhalogenated phenyl isocyanate synthesis with excess phosgene and either triethylamine or tetramethylurea
发明人：CHEN GEORGE C; ROWELL ROGER M
权利人:US AGRICULTURE
摘要:Two procedures are described that can be used to prepare polyhalogenated phenyl isocyanates (2,4,6-trichloro,2,3,5,6-tetrachloro, pentachloro, 2,4,6-tribromo and 2,4,6-trifluoro derivatives) from the corresponding anilines in good yields (95-99%) with small amounts of urea byproducts (1-5%) within reasonable reaction times (3-6 hours). These are: n 1. Liquid phase phosgenation of polyhalogenated anilines with tertiary amines as a hydrogen chloride acceptor. n 2. Liquid phase phosgenation of polyhalogenated anilines in excess phosgene at the beginning and throughout the reaction.

专利号:WO-9638455-A1
优先权日:1995-05-30
标题:Facile synthesis of phosphonomethylglycine from phosphonomethyliminodiacetic acid