CAS: 504-31-4; Alpha-Pyrone

相似化合物

496-64-0 505097-65-4 129660-02-2

上下游产品

CAS号123-75-1 四氢吡咯 | CAS号7298-67-1 2-羟基-5-乙酰氨基苯乙酮 | CAS号500-05-0 阔马酸 | CAS号110-87-2 3,4-二氢-2H-吡喃 | CAS号19978-32-6 3-溴-2H-吡喃-2-酮 | CAS号64919-86-4 exo-10-oxatricy... | CAS号70411-95-9 2-(tert.butylpe... | CAS号19978-33-7 5-溴-2H-吡喃-2-酮 | CAS号22980-23-0 3-oxabicyclo[2.... | CAS号39763-18-3 5-oxopenta-2,4-... | CAS号19978-32-6 3-溴-2H-吡喃-2-酮 | CAS号833-50-1 2-苯基苯并恶唑 | CAS号131-11-3 邻苯二甲酸二甲酯； 避蚊酯 | CAS号1877-72-1 3-氰基苯甲酸 | CAS号121-69-7 N,N-二甲基苯胺 | CAS号121-91-5 间苯二甲酸(IPA) | CAS号31678-73-6 3-methylpyran-2-one

📜香豆酸置于铜体系中,650.0 °C,666.61 Pa 条件下,反应生成 2H-吡喃-2-酮
参考文献:Zimmermann Et Al.,Organic Syntheses,Collective,Voll. V <1973> 982
标题:Zimmermann Et Al.,Organic Syntheses,Collective,Voll. V <1973> 982

专利信息

专利号:US-2021323987-A1
优先权日:2018-08-20
标题:Methods for the Synthesis of Heteroatom Containing Polycyclic Aromatic Hydrocarbons
发明人：GARG NEIL K; DARZI EVAN R; BARBER JOYANN S; SUSICK ROBERT; CHARI JASON; SPENCE KATIE
权利人:UNIV CALIFORNIA
摘要:Methods for the synthesis of polycyclic aromatic hydrocarbons and synthesis platforms for performing such syntheses are provided. Methods and platforms are provided that allow for the synthesis of aza-polycyclic aromatic hydrocarbons by an expedient ring assembly. Methods and platforms allow for a modular approach to synthesis that provide multiple new C—C bonds in sequential pericyclic reactions, thus giving access to compounds with multiple axes of substitution.

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-5139940-A
优先权日:1989-10-26
标题 :Activation compounds and methods of synthesis of activation compounds
发明人：ISAACS STEPHEN T; CIMINO GEORGE D; METCHETTE KENNETH C; TESSMAN JOHN W
权利人:ISAACS STEPHEN T; CIMINO GOERGE D; METCHETTE KENNETH C; TESSMAN JOHN W
摘要:The invention is directed to isopsoralen compound compositions that contain a variety of substitutions which yet permit their binding to nucleic acid polymers. Reaction conditions that activate these bound isopsoralens results in covalent crosslinking to the nucleic acid polymers. The resultant complex is inhibited from being a template for the template-directed enzymatic synthesis of a complementary nucleic acid polymer. Beside the isopsoralens compositions, the invention includes their synthesis, the nucleic acid complex production and detection, and the above inhibitory method of use of the isopsoralens.

专利号:US-4870199-A
优先权日:1986-04-30
标题 :Processes for the synthesis of diprotected R[R*,S*]-3,5-dihydroxy-6-oxohexanoate esters
发明人：CHEN KAU-MING; HARDTMANN GOETZ E; KAPA PRASAD K; LEE GEORGE T; LINDER JEROME; WATTANASIN SOMPONG
权利人:SANDOZ PHARMACEUTICALS CORP
摘要:Process for the synthesis of compounds of the formula in R[R*,S*] enantiomeric form, wherein each P1 is independently an hydroxy group-protecting group, and R2z is C1-4alkyl, benzyl or allyl, comprising, as a key step when R2z is R2x, the reaction of the compound of the formula in (S) enantiomeric form with a compound of the formula Mg &cir& +2 ((-)OOC-CH2-COOR2x)2 to obtain a compound of the formula in (S) enantiomeric form, and, as a key step when R2z is R2y, the reaction of a compound of the formula in (S) enantioimeric form with a compound of the formula Li(+)(-)CH2-COOR2y to obtain a compound of the formula in (S) enantiomeric form, wherein R2x is primary or secondary C1-4alkyl, benzyl or allyl, R2y is C1-4alkyl not containing an asymmetric carbon atom, and R3' is methyl or ethyl, processes for the synthesis of compounds of the formula comprising reacting a compound of the formula with the reaction product of a strong base and a compound of the formula optionally followed by, when R2z is allyl, cleavage of the allyl and P1 groups to obtain the corresponding compound of the formula wherein each R7 is methyl or ethyl, R is as defined in the specification, and each P1 independently and R2z are as defined above, and the compounds of the formula wherein R and each R7 are as defined above.

专利号:US-6399776-B2
优先权日:1994-08-05
标题:Processes and intermediates in the synthesis of 5-(3-exo-bicyclo[2.2.1]hept-2-yloxy-4-methoxyphenyl)-3,4,5,6-tetrahydropyrimidine-2(1H)-one
发明人：LACOUR THOMAS G; MURTIASHAW III CHARLES WILLIAM
权利人:PFIZER
摘要:This invention relates to novel processes for preparing the pharmaceutically active compound 5-(3-[(2S)-exo-bicyclo[2.2.1]hept-2-yloxy]-4-methoxyphenyl)-3,4,5,6-tetrahydropyrimidin-2(1H)-one and its corresponding 2R enantiomer and for preparing certain intermediates used in the synthesis of these compounds. It also relates to novel intermediates used in the synthesis of such pharmaceutically active compounds and to other novel compounds that are related to such intermediates.

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.