CAS: 2457-47-8; 3,5-Dichloropyridine

上下游产品

CAS号16063-70-0 2,3,5-三氯吡啶 | CAS号2176-62-7 五氯吡啶 | CAS号2808-86-8 2,3,4,5-四氯吡啶 | CAS号2402-79-1 四氯吡啶 | CAS号136590-83-5 3,5-二氯吡啶-4-甲醛 | CAS号628-13-7 吡啶盐酸盐 | CAS号23029-86-9 N-methyl-3,5-di... | CAS号74-88-4 碘甲烷 | CAS号4454-05-1 2-甲氧基-3,4-二氢-2H-吡喃 | CAS号13958-93-5 3,5-二氯吡啶-4-甲酸 | CAS号107264-06-2 N-氟-3,5-二氯吡啶三氟 | CAS号5437-33-2 3,5-二氯-2-羟基吡啶 | CAS号51269-82-0 5-氯-3-氰甲基吡啶 | CAS号223794-95-4 1-(5-氯吡啶-3-基)哌嗪 | CAS号223797-65-7 3-氯-5-乙氧基吡啶 | CAS号18344-58-6 3,5-二氯-4-硝基吡啶N-氧化物 | CAS号343781-45-3 3,5-二氯-4-溴吡啶 | CAS号343781-41-9 3,5-二氯-4-碘吡啶 | CAS号1214350-54-5 3,5-dichloro-2-... | CAS号251992-92-4 4-(4-bromopheny...

五氯吡啶置于sodium Acetate,溶剂黄146,锌体系中,化学反应 5.5H,以65%的收率获得3,5-二氯吡啶
参考文献:Chemical Process
标题:Chemical Process
摘要:一种制备3,5-二氯吡啶的方法,包括将三氯吡啶,四氯吡啶或五氯吡啶与锌金属在存在酸性化合物的条件下,在50-120oc的温度范围内反应.

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.