CAS: 632-79-1; Tetrabromophthalic Anhydride

上下游产品

CAS号85-44-9 苯酐 | CAS号13810-83-8 四溴酞酸 | CAS号7664-93-9 硫酸 | CAS号7726-95-6 溴素 | CAS号143880-33-5 5,6,7,8-tetrabr... | CAS号19783-56-3 1H-Isoindole-1,... | CAS号19692-03-6 Benzoic acid,2,... | CAS号24407-32-7 4,5,6,7-四溴异二氢吲哚... | CAS号26015-78-1 4,5,6,7-tetrabr... | CAS号13810-83-8 四溴酞酸 | CAS号13027-28-6 4,5,6,7-四溴苯酚酞 | CAS号15119-34-3 香豆素-3腈 | CAS号6958-62-9 1H-Isoindole-1,... | CAS号85604-83-7 2,3,4,5-tetrabr...

苯酐置于sodium Periodate,硫酸,Sodium Bromide体系中,用 水 作为反应溶剂,化学反应 4.0H,以97.4%的收率获得产物四溴苯酐
参考文献:一种四溴苯酐的制备方法
标题:一种四溴苯酐的制备方法
摘要:本发明属于化工领域,具体涉及一种四溴苯酐的制备方法,以苯酐,溴化钠,Naio4和浓硫酸为原料经溴化得到四溴苯酐.本发明有效的解决了现有合成路线中成本高,毒性大,步骤繁琐等问题.同时,整条合成路线反应条件温和,操作方便,收率及纯度高,适合工业化大规模生产.

专利信息

专利号:US-10968308-B2
优先权日:2017-11-07
标 题 :Preparation method of epoxy compound having alkoxysilyl group, epoxy compound having alkoxysilyl group, composition comprising the same, and use thereof
发明人：CHUN HYUN AEE; KIM YUN JU; PARK SOOK YEON; PARK SU JIN
权利人:KOREA INST IND TECH
摘要:Provided are a preparation method of an epoxy compound having an alkoxysilyl group in which an increase in the epoxy equivalent weight (EEW) of the epoxy compound is minimized because alkoxysilylation occurs through a simple one-step reaction using a hydroxyl group formed during the synthesis of the epoxy compound, an epoxy compound having an alkoxysilyl group prepared by the method, a composition comprising the same, and a use thereof. The method includes the reaction of an epoxy compound having a hydroxyl group with an isocyanate alkoxysilane in the presence of amine-based base catalyst, wherein the epoxy compound having an alkoxysilyl group has a mole ratio of [epoxide group]:[alkoxysilyl group] of n:1 ranging from 2:1 to 10:1, and an EEW increase of the epoxy compound having an alkoxysilyl group is less than 260/n. The epoxy compound has good physical properties when being cured.

专利号:US-4000358-A
优先权日:1968-12-19
标题:Unsaturated ester-amides of halogenated alkenes
发明人：D ALELIO GAETANO F
权利人:ALELIO GAETANO F D
摘要:This invention deals with new unsaturated esteramides of alpha , beta -unsaturated polycarboxylic acids derived from halogenated alcohols of the formula wherein R is a divalent hydrocarbon moiety having at least one and no more than 10 carbon atoms, X is a member selected from the class of bromine and chlorine, and R' is a member selected from the class of hydrogen, X and a monovalent hydrocarbon containing at least one and no more than 20 carbon atoms. Typical esteramides are the maleates, fumarates, itaconates and citraconates. These monomers possess fire-retardant properties and are useful for the synthesis of polymers and copolymers.

专利号:US-3796746-A
优先权日:1968-12-19
标题 :Unsaturated ester of halogenated alkenes
发明人：D ALELIO G
权利人:ALELIO G D
摘要:THIS INVENTION DEALS WITH NEW UNSATURATED ESTERS OF A,B-UNSATURATED CARBOXYLIC ACIDS DERIVED FROM HALOGENATED ALCOHOLS OF THE FORMULAS HO-R-C(-X)=C(-X)-R'' AND HO-R-C(-X)2-C(-X)2-R'' WHEREIN R IS A DIVALENT HYDROCARBON MOIETY HAVING AT LEAST ONE AND NO MORE THAN 10 CARBON ATOMS, X IS A MEMBER SELECTED FROM THE CLASS OF OF BROMINE AND CHLORINE, AND R'' IS A MEMBER SELECTED FROM THE CLASS OF HYDROGEN, X AND A MOLOVALENT HYDROCARBON CONTAINING AT LEAST ONE AND NO MORE THAN 20 CARBON ATOMS. TYPICAL ESTERS ARE THE ACRYLATES, METHACRYLATES, MALEATES, FURMARATES, ITACONATES AND CINNAMATES. THE MONOMERS POSSESS FIRERETARDANT PROPERTIES AND ARE USEFUL FOR THE SYNTHESIS OF POLYMERS AND COPOLYMERS.

专利号:US-3637813-A
优先权日:1968-12-19
标 题 :Unsaturated ester of halogenated alkenes
发明人：ALELIO GAETANO F D
权利人:GAETANO F D ALELIO
摘要:THIS INVENTION DEALS WITH NEW UNSATURATED ESTERS OF A,B-UNSATURATED CARBOXYLIC ACIDS DERIVED FROM HALOGENATED ALCOHOLS OF THE FORMULAS HO-R-C(-X)=C(-X)-R'' AND HO-C(-X)2-C(-X)2-R'' WHEREIN R IS A DIVALENT HYDROCARBON MOIETY HAVING AT LEAST ONE AND NO MORE THAN 10 CARBON ATOMS, X IS A MEMBER SELECTED FROM THE CLASS OF BROMINE AND CHLORINE, AND R'' IS A MEMBER SELECTED FROM THE CLASS OF HYDROGEN, X AND A MONOVALENT HYDROCARBON CONTAINING AT LEAST ONE AND NO MORE THAN 20 CARBON ATOMS. TYPICAL ESTERS ARE THE ACRYLATES, METHACRYLATES, MALEATES, FUMARATES, ITACONATES AND CINNAMATES. THESE MONOMERS POSSESS FIRERETARDANT PROPERTIES AND ARE USEFUL FOR THE SYNTHESIS OF POLYMERS AND COPOLYMERS.

专利号:US-3950392-A
优先权日:1968-12-19
标题:Unsaturated ester-amides of halogenated alkenes
发明人：D ALELIO GAETANO F
权利人:ALELIO GAETANO F D
摘要:This invention deals with new unsaturated ester-amides of alpha , beta -unsaturated polycarboxylic acids derived from halogenated alcohols of the formula XX ¦¦ HO-R-C=C-R' wherein R is a divalent hydrocarbon moiety having at least one and no more than 10 carbon atoms, X is a member selected from the class of bromine and chlorine, and R' is a member selected from the class of hydrogen and a monovalent hydrocarbon containing at least one and no more than 20 carbon atoms. Typical ester-amides are the maleates, fumarates, itaconates and citraconates. These monomers possess fire-retardant properties and are useful for the synthesis of polymers and copolymers.

专利号:US-9422260-B2
优先权日:2009-09-18
标 题 :Process for the synthesis of 4,5,6,7-tetrachloro-3′,6′-dihydroxy-2′,4′,5′,7′-tetraiodo-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one(Rose Bengal) and related xanthenes
发明人：SINGER JAMIE; WACHTER ERIC A; SCOTT TIMOTHY; LUTZ MARLON; BABIAK KEVIN
权利人:PROVECTUS PHARMACEUTICALS INC; PROVECTUS PHARMATECH INC
摘要:A new process for the manufacture of iodinated xanthenes in high purity includes a cyclization step followed by an iodination step. No extraction, chromatographic or solvent concentration steps are required, and the intermediate as well as final compounds are isolated via filtration or similar means. The process requires a single organic solvent, and the steps are completed at temperatures below 100° C. The exclusion of chloride ions, of chloride free-radicals, hypochlorite ions, or hypochlorous acid as reagents or from reagents that may generate these species in situ in the presence of oxidants, prevents undesirable impurity formation. Several new compounds have been conceived and isolated using these methods. These new compounds are also formed into new medicaments.