CAS: 111-24-0; 1,5-Dibromopentane

上下游产品

CAS号106795-52-2 1-(2-aminopheny... | CAS号104622-00-6 2-(5-bromopenty... | CAS号3209-46-9 N1,N1-二甲基戊烷-1,5-二胺 | CAS号42236-50-0 1,12-二乙酰氧基十二烷 | CAS号4096-20-2 N-苯基哌啶 | CAS号56-00-8 1,5-戊二基双甲硫代磺酸盐 | CAS号3884-71-7 5-溴-2-戊酮 | CAS号36263-51-1 1-(4-甲氧基苯基)环己烷甲腈 | CAS号4224-70-8 6-溴己酸

1,5-戊二醇置于2,6-二甲基吡啶,四溴化碳体系中,用 N,N-二甲基甲酰胺 用作溶剂,化学反应 6.0H,以96%的收率获得1,5-二溴戊烷
参考文献:二聚金催化剂光介导醇脱氧
标题:二聚金催化剂光介导醇脱氧
摘要:探索了一种用于伯醇还原脱氧的新方案.这种光介导的方法结合了一种新的醇溴化方法,结合了 [au2(Dppm)2]Cl2 [dppm = 1,1-双(二苯基膦)甲烷] 作为光氧化还原催化剂的强大还原能力.所讨论的高效方法的特点是使用 Uva 发光二极管,其显着缩短了反应时间并降低了设置成本.
Doi:10.1002/ejoc.201403351

专利信息

专利号:US-5498734-A
优先权日:1991-09-23
标 题:Preparation and use of (2-butene-1,4-diyl)magnesium complexes in organic synthesis
发明人：RIEKE REUBEN D
权利人:UNIV NEBRASKA
摘要:The magnesium complexes of cyclic hydrocarbons containing conjugated dienes, such as 1,2-dimethylenecycloalkanes, and 1,3-butadienes, are readily prepared in high yields using highly reactive magnesium. Reactions of these (2-butene-1,4 diyl)magnesium reagents with electrophiles such as dibromoalkanes, alkylditosylates, alkylditriflates, bromoalkylnitriles, esters, or amides serve as a convenient method for synthesizing carbocyclic systems. Significantly, carbocycles prepared by this method contain functional groups such as the exocyclic double bond or a keto group in one of the rings which could be used for further elaboration of these molecules. Furthermore, fused bicyclic systems containing a substituted five-membered ring can be conveniently prepared at high temperatures by the reactions of (2-butene-1,4-diyl)magnesium complexes with carboxylic esters or acid halides whereas low temperatures lead to regioselective synthesis of β,γ-unsaturated ketones. Additionally, γ-lactones, including spiro γ-lactones, can be easily prepared in a one pot synthesis from the reaction of (2-butene-1,4-diyl)magnesium complexes with a ketone or aldehyde and carbon dioxide. Also, δ-lactones can be easily prepared in a one pot synthesis from the reaction of (2-butene-1,4-diyl)magnesium complexes with epoxides followed by reaction with CO 2 . Use of α-hydroxy epoxides without the addition of CO 2 leads to the synthesis of vicinal diols. Chiral epoxides lead to chiral alcohols.

专利号:US-9005573-B2
优先权日:2011-12-22
标 题:Layered conversion synthesis of zeolites
发明人：NICHOLAS CHRISTOPHER P; MILLER MARK A
权利人:UOP LLC
摘要:A new synthesis technique has been developed to prepare a family of coherently grown composites of at least two zeotypes. Examples of these composites are represented by the empirical formula.n nNa n M m k+ T t Al 1-x E x Si y O z n nwhere “nâ€? is the mole ratio of Na to (Al+E), M represents at least one metal of zinc, Group 1, Group 2, Group 3 and the lanthanide series of the periodic table, and any combination thereof, “mâ€? is the mole ratio of M to (Al+E), “kâ€? is the average charge of the metal or metals M, T is the organic structure directing agent or agents, “tâ€? is the mole ratio of N from the organic structure directing agent or agents to (Al+E), and E is a framework element such as gallium. The synthesis technique is the Layered Conversion Synthesis technique.

专利号:US-5581004-A
优先权日:1991-09-23
标题 :Preparation and use of (2-butene-1,4-diyl) magnesium complexes in organic synthesis
发明人：RIEKE REUBEN D
权利人:UNIV NEBRASKA
摘要:The magnesium complexes of cyclic hydrocarbons and conjugated dienes, such as 1,2-dimethylenecycloalkanes and 1,3-butadienes, are readily prepared in high yields using highly reactive magnesium. Reactions of these (2-butene-1,4-diyl)magnesium reagents with electrophiles such as dibromoalkanes, alkylditosylates, alkylditriflates, bromoalkylnitriles, esters, or amides serve as a convenient method for synthesizing carbocyclic systems. Significantly, carbocycles prepared by this method contain functional groups such as the exocyclic double bond or a keto group in one of the rings which could be used for further elaboration of these molecules. Furthermore, fused bicyclic systems containing a substituted five-membered ring can be conveniently prepared at high temperatures by the reactions of (2-butene-1,4-diyl)magnesium complexes with carboxylic esters or acid halides whereas low temperatures lead to regioselective synthesis of β,γ-unsaturated ketones. Additionally, γ-lactones, including spiro γ-lactones, can be easily prepared in a one pot synthesis from the reaction of (2-butene-1,4-diyl)magnesium complexes with a ketone or aldehyde and carbon dioxide.

专利号:US-10875780-B2
优先权日:2017-06-05
标题:Synthesis of nanocrystalline beta zeolite, synthesis method and use thereof in catalytic applications
发明人：PARIS CARRIZO CECILIA GERTRUDIS; GALLEGO SANCHEZ EVA MARIA; DIAZ REY MARIA DEL ROCIO; MARTINEZ ARMERO MARTA EVELIA; MARTINEZ SANCHEZ MARIA CRISTINA; MOLINER MARIN MANUEL; CORMA CANOS AVELINO
权利人:UNIV VALENCIA POLITECNICA; CONSEJO SUPERIOR INVESTIGACION
摘要:The present invention relates to a new process for synthesising a crystalline material comprising structure Beta zeolite in nanocrystalline form, and which can comprise at least the following steps: (i) preparing a mixture comprising at least one source of water, at least one source of a tetravalent element Y, at least one source of a trivalent element X, at least one source of an alkali cation or alkaline earth metal cation (A), and at least one organic molecule selected from a monocyclic quaternary ammonium R1R2CycloN+, and a quaternary ammonium substituted with a cycloalkyl group R3R4R5R6N+. The molar composition of the mixture is: n X2O3:YO2:a A:m OSDA1:z H2O; ii) crystallising the mixture; and iii) recovering the crystalline material.

专利号:US-6107495-A
优先权日:1996-07-24
标题:Thienylcyclohexane derivatives for thienylcyclohexyl synthesis
发明人：CAZAUX JEAN-BERNARD; DAFNIET MICHEL; KAMENKA JEAN-MARC; MANGINOT ERIC
权利人:EXPANSIA SA
摘要:PCT No. PCT/FR97/01382 Sec. 371 Date Jan. 19, 1999 Sec. 102(e) Date Jan. 19, 1999 PCT Filed Jul. 24, 1997 PCT Pub. No. WO98/03498 PCT Pub. Date Jan. 29, 1998Novel thienylcyclohexane derivatives of general formula (I), wherein R' is the 2-thienyl or 3-thienyl radical, R is the cyano radical or a radical of formula -C(O)A, and R2'' is a saturated or unsaturated optionally cyclic hydrocarbon radical, or an aryl radical, are disclosed. Methods for preparing said compounds, and the use thereof as novel industrial products for the synthesis of thienylcyclohexyl derivatives, are also disclosed.

专利号:US-9908846-B2
优先权日:2014-02-21
标题:Composition, synthesis, and use of new arylsulfonyl isonitriles
发明人：FLEMING FRASER FERGUSSON; LUJAN MONTELONGO JESUS ARMANDO
权利人:DUQUESNE UNIV OF THE HOLY GHOST; UNIV HOLY GHOST DUQUESNE
摘要:This invention relates to novel isonitriles, including arylsulfonyl isonitriles, and methods for their synthesis. The isonitriles include a conjugated ring system. The structure is designed with the flexibility to have multiple substitution patterns. The isonitriles may be used in applications including, but not limited to, pharmaceutical compositions.