CAS: 591-22-0; 3,5-Dimethylpyridine

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CAS号7182-09-4 1-(1-Propenyl)p... | CAS号10560-39-1 1,3,5-tri-tert-... | CAS号50-00-0 甲醛 | CAS号123-38-6 丙醛 | CAS号110-89-4 六氢吡啶 | CAS号62479-73-6 formaldehyde O-... | CAS号13987-61-6 2-Methyl-N-meth... | CAS号3718-65-8 3,5-二甲基吡啶N-氧化物 | CAS号28051-68-5 2-Methylpropena... | CAS号22739-24-8 1,3,5-Trimethyl... | CAS号3718-65-8 3,5-二甲基吡啶N-氧化物 | CAS号3222-49-9 5-甲基烟酸 | CAS号499-81-0 吡啶-3,5-二羧酸 | CAS号455-70-9 5-氟吡啶-3-甲酸甲酯 | CAS号407-21-6 3-氟-5-甲基吡啶 | CAS号3430-16-8 3-溴-5-甲基吡啶 | CAS号3430-19-1 3-氨基-5-甲基吡啶 | CAS号544703-96-0 3,5-二甲基吡啶-4-羧酸 | CAS号42885-14-3 3-氰基-5-甲基吡啶 | CAS号1195-58-0 3,5-二氰基吡啶

2,3-Dihydro-2-Methoxy-3,5-Dimethyl-4H-Pyran置于硝酸铵,溶剂黄146体系中,用 水 作为反应溶剂,化学反应生成 3,5-二甲基吡啶
参考文献:Preparation Of Pyridines
标题:Preparation Of Pyridines
摘要:通过在存在脂肪族羧酸和少量硝酸的情况下,将2-烷氧基-2,3-二氢-4H-吡喃或戊二醛与硝酸铵反应,可以制备吡啶.根据本发明的方法可以制备的吡啶是制备染料,药物和杀虫剂的有用起始物质,也是有用的溶剂.

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-4267070-A
优先权日:1979-10-30
标题:Catalyst for the synthesis of aromatic monoisocyanates
发明人：NEFEDOV BORIS K; MANOV-JUVENSKY VLADIMIR I; DERGUNOV JURY I; RYSIKHIN ANATOLY I; CHIMISHKIAN ALEXANDR L
权利人:NEFEDOV BORIS K; MANOV JUVENSKY VLADIMIR I; DERGUNOV JURY I; RYSIKHIN ANATOLY I; CHIMISHKIAN ALEXANDR L
摘要:A catalyst for the synthesis of aromatic monoisocyanates comprising 1.64 to 16.6% by weight of palladium chloride, 0.16 to 47.6% by weight of an oxide of a metal of Group VB of the periodic system, 1.5 to 81.8% by weight of an oxide of a metal of Group VI B of the periodic system, 1.64 to 89.8% by weight of pyridine or an alkylsubstituted pyridine. n The use of the catalyst according to the invention in the synthesis of aromatic monoisocyanates makes it possible to obtain a high degree of conversion of the starting compound of up to 100%, a high yield of the desired product of up to 97%, and increased productivity of the catalyst of up to 40 g of the desired product per g of PdCl 2 per hour.

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-10138131-B2
优先权日:2015-03-15
标题:Structure directing agent for improved synthesis of zeolites
发明人：MOULTON ROGER
权利人:SACHEM INC
摘要:The present invention relates to structure directing agents for synthesis of crystalline materials generally known as zeolites, by use of an enhanced content of the trans isomer of a 3,5-dimethyl-N,N-dimethylpiperidinium cation together with the conventional oxides used to form zeolites.

专利号:US-5705659-A
优先权日:1994-09-30
标 题 :Intermediates for the synthesis of 16-phenoxy-prostatrienoic acid derivatives and a preparing method thereof
发明人：PARK HOKOON; JUNG SUN HO; LEE YONG SUP; NAM KI HONG
权利人:KOREA INST SCI & TECH
摘要:Intermediate compounds represented as formula (I) useful for the synthesis of 16-phenoxy-prostatrienoic acid derivatives and a preparing method thereof are disclosed. ##STR1## wherein R is tetrahydropyranyl, tetrahydrofuranyl, 2-ethoxyethyl, t-butyldimethylsilyl, triisopropylsilyl or triethylsilyl group; R 1 and R 2 are independently hydrogen or ester-forming group; P is hydrogen, trimethylsilyl or tri-n-butyltin; and wavy line means epi-stereoisomeric mixture.

专利号:US-5002641-A
优先权日:1990-06-28
标题:Electrochemical synthesis of niacin and other N-heterocyclic compounds
发明人：TOOMEY JR JOSEPH E
权利人:REILLY IND INC
摘要:An electrochemical oxidation of a pi-deficient N-heterocyclic precursor compound having an oxidizable organic group attached by a carbon-to-carbon linkage. This precursor compound is at least sparingly water soluble. The preferred electro-oxidation is conducted at an effective anode and in a medium which consists essentially of water, carboxylic acid, and the precursor compound. Preferred are electro-oxidations of substituted pyridine and quinoline bases and a particularly preferred aspect provides a convenient electrochemical synthesis of niacin from 3-methylpyridine.