CAS: 201286-65-9; 4-Bromo-3,5-Dimethylpyridine

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40899-37-4 17117-23-6 259807-91-5

上下游产品

3,5-dimethyl-4-nitropyridine-1-oxide phosphorus tribromide 4-bromo-3,5-dimethyl-pyridine 1-oxide 3,5-Lutidine 3,5-dimethylpyridine-4-carbaldehyde 4-(3,5-di-tert-butyl-4-methoxyphenyl)-3,5-dimethylpyridine 3,5-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2yl)-pyridine

3,5-二甲基吡啶置于过氧乙酸,Lithium Aluminium Tetrahydride,四氯化钛,溶剂黄146体系中,用 四氢呋喃 用作溶剂,化学反应 21.17H,反应生成4-溴-3,5-二甲基吡啶
参考文献:卤素键合分子胶囊
标题:卤素键合分子胶囊
摘要:介绍了仅基于卤素键(xb)相互作用的分子胶囊及其在溶液中的主客体结合特性.定义明确的四点xb超分子系统的第一个示例是通过用极化的卤素原子修饰间苯二酚[4] Arene Cavitands与四(4-吡啶基)间苯二酚[4] Arene Cavitands二聚来实现的.NMR数据结合为氟,氯,Br和i Cavitands作为xb施主显示结合常数(ķ一个向上的),以5370 中号-1(δ ģ 283ķ =-4.85千卡摩尔-1,对于i),即使在具有xb竞争性的溶剂中,例如283 K的氘代苯/丙酮/甲醇(70:30:1),可比较的单齿模型系统也没有关联.Xb囊的几何结构由二维hoesy NMR证明,热力学曲线表明,囊的形成是由焓驱动的.或者1,4-二恶烷或1,4-二噻烷被包封在每个xb胶囊内的两个分开的空腔,具有高达的ķ一个= 9.0 10 8 中号-2(δ ģ 283ķ =-11.6千卡摩尔-
Doi:10.1002/anie.201502960

专利信息

专利号:US-8569560-B2
优先权日:2006-10-13
标题 :Synthesis of terminal alkenes from internal alkenes via olefin metathesis
发明人：SCHRODI YANN; PEDERSON RICHARD L; KAIDO HIROKI; TUPY MICHAEL J
权利人:ELEVANCE RENEWABLE SCIENCES
摘要:This disclosure relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by an olefin metathesis catalyst. According to one aspect, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting, in the presence of a ruthenium alkylidene metathesis catalyst, an olefinic substrate comprised of at least one internal olefin with a cross metathesis partner comprised of an alpha olefinic reactant, under reaction conditions effective to allow cross-metathesis to occur, wherein the reaction conditions include a reaction temperature of at least 35° C. The methods, compositions, reactions and reaction systems herein disclosed have utility in the fields of catalysis, organic synthesis, and industrial chemistry.

专利号:US-9255117-B2
优先权日:2006-07-13
标题 :Synthesis of terminal alkenes from internal alkenes and ethylene via olefin metathesis
发明人：SCHRODI YANN
权利人:MATERIA INC
摘要:This invention relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by a selected olefin metathesis catalyst. In one embodiment of the invention, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting an olefinic substrate comprised of at least one internal olefin with ethylene, in the presence of a metathesis catalyst, wherein the catalyst is present in an amount that is less than about 1000 ppm relative to the olefinic substrate, and wherein the metathesis catalyst has the structure of formula (II) n nwherein the various substituents are as defined herein. The invention has utility, for example, in the fields of catalysis, organic synthesis, and industrial chemistry.

专利号:US-6946533-B2
优先权日:2002-08-01
标 题 :Synthesis of macrocyclic polymers by ring insertion polymerization of cyclic olefin monomers
发明人：GRUBBS ROBERT; BIELAWSKI CHRIS; BENITEZ DIEGO
权利人:CALIFORNIA INST OF TECHN
摘要:A method for synthesizing cyclic polymers using transition metal alkylidene complexes as reaction catalysts is provided, wherein the complexes contain a cyclic group. Polymerization is carried out on the catalyst, using cyclic olefin monomers that undergo ring insertion polymerization, and no linear intermediates are generated. Following completion of polymerization, the cyclic polymer detaches from the complex via an intramolecular chain transfer reaction and the catalytic complex is regenerated. The invention also provides novel transition metal alkylidene complexes useful as catalysts in the aforementioned process, as well as novel cyclic hydrocarbons.

专利号:US-11794179-B2
优先权日:2016-08-24
标 题 :Synthesis and characterization of metathesis catalysts
发明人：JOHNS ADAM M
权利人:UMICORE AG & CO KG
摘要:This invention relates generally to olefin metathesis catalysts, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, and the use of such compounds in the metathesis of olefins and in the synthesis of related olefin metathesis catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and in industrial applications such as oil and gas, fine chemicals and pharmaceuticals.

专利号:US-2025026871-A1
优先权日:2021-04-06
标 题:Cyclic ruthenium benzylidene initiators for enhanced ring expansion metathesis polymerization
发明人：GOLDER MATTHEW; WANG TENG-WEI; JOHNSON JEREMIAH A
权利人:UNIV WASHINGTON; MASSACHUSETTS INSTITUTE OF TECH M I T; MASSACHUSETTS INST TECHNOLOGY
摘要:Cyclic ruthenium benzylidene initiators useful for the controlled synthesis of functionalized cyclic macromolecules via ring-expansion metathesis polymerization.

专利号:US-11173476-B2
优先权日:2016-08-15
标题 :Metathesis catalysts
发明人：HERRON JESSICA R; PEDERSON RICHARD L; JOHNS ADAM M; GIARDELLO MICHAEL A
权利人:UMICORE AG & CO KG
摘要:This invention relates generally to olefin metathesis catalysts, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, and the use of such compounds in the metathesis of olefins and in the synthesis of related olefin metathesis catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and in industrial applications such as oil and gas, fine chemicals and pharmaceuticals.