CAS: 290-37-9; Pyrazine

相似化合物

1783766-13-1 13925-07-0 1378332-54-7

上下游产品

2-pyrazylcarboxylic acid 2,5-pyrazinedicarboxylic acid 2,3-dicarboxypyrazine diethyl pyrazine-2,5-dicarboxylate2-Butylpyrazine 1-phenethyl-pyrazinium; iodide N-ethylpyrazinium iodide 1-phenacyl-pyrazinium; bromide

葡萄糖置于ammonium Hydroxide体系中,化学反应生成吡嗪
参考文献:Brandes; Stoehr,Journal Fur Praktische Chemie (Leipzig 1954),1896,Vol. <2> 54,P. 486,489
标题:Brandes; Stoehr,Journal Fur Praktische Chemie (Leipzig 1954),1896,Vol. <2> 54,P. 486,489

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-5569762-A
优先权日:1994-01-14
标题:Asymmetric synthesis of intermediates for retroviral protease inhibitor compounds
发明人：WISSNER ALLAN; TROVA MICHAEL P
权利人:AMERICAN CYANAMID CO
摘要:The disclosure describes an improved process for producing optically active compounds of Formula II or III, which compounds are useful as intermediates for preparing compounds active as inhibitors of retroviral protease enzymes: ##STR1## wherein R 1 , R 50 and Z are described in the specification. The improved process includes either synthesis of diastereomeric iodolactones which are separated prior to conversion to compounds of Formula II or III or synthesis of an epoxide which is converted directly to compounds of Formula II and III.

专利号:WO-2024201393-A1
优先权日:2023-03-29
标 题:Methods for the synthesis of nucleoside analogues and nucleosides analogues derived therefrom
发明人：BRITTON ROBERT; Muir Garrett; ANKETELL MATTHEW JAMES; HUXLEY COHAN; BAIKABI SUPING
权利人:UNIV FRASER SIMON
摘要:The present invention relates to methods for the synthesis of nucleoside analogues. More specifically, the present invention relates to methods for the synthesis of C4' substituted nucleoside analogues via the reaction of a soft nucleophile with a halohydrin ketone.

专利号:US-9663477-B1
优先权日:2014-09-19
标题:Synthesis and structure of 3,5-diamino-2,6-di-(tert-butyl-NNO-azoxy) pyrazine as a critical intermediate in the synthesis of a novel energetic compound
发明人：WILSON REBECCA M; MANNION JOSEPH D; MORAN JESSE S
权利人:WILSON REBECCA M; MANNION JOSEPH D; MORAN JESSE S; US NAVY
摘要:The present disclosure relates generally to a critical intermediate in a synthesis of a postulated energetic material, and more specifically relates to a critical intermediate, 3,5-diamino-2,6-di-(tert-butyl-NNO-azoxy)pyrazine, having the structure: n nThe postulated energetic material has calculated performance properties that greatly exceed those of HMX and CL-20. The specific critical intermediate (Compound 1) shown above has a molecular weight of 310.359 g/mol, a density at −123° C. of 1.293 g/mL, and a density at 20° C. of 1.259 g/mL.

专利号:US-7173021-B2
优先权日:2004-09-02
标题:Synthesis of temozolomide esters as potent anticancer pro-drugs for topical and transdermal applications in treatments of cancers
发明人：WANG YONGFENG; CONWAY BARBARA R; SUPPASANSATORN PANASSAYA
权利人:TIANJIN NORTH PHARM SCI TECH C
摘要:This invention relates to the use of temozolomide esters (4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylate esters) Formula 1 as potent anticancer pro-drugs for treatment of cancers by topical and transdermal applications, and to a novel process for synthesis of temozolomide esters by a direct esterification of temozolomide acid (3,4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-1,2,3,5-tetrazine-8-carboxylic acid) with a halogeno-aliphatic compound in presence of a base, or with an alcohol in presence of a dehydrate agent

专利号:US-6613910-B2
优先权日:2001-04-02
标题 :One-pot synthesis of group 8 transition metal carbene complexes useful as olefin metathesis catalysts
发明人：GRUBBS ROBERT H; MORGAN JOHN P; BENITEZ DIEGO; LOUIE JANIS
权利人:CALIFORNIA INST OF TECHN
摘要:The invention provides a novel method for synthesizing transition metal carbene complexes useful as olefin metathesis catalysts. The method is a convenient one-pot synthesis in which transition metal carbenes are prepared in high yield from readily available starting materials via a dihydrogen complex containing two different anionic ligands, preferably a phosphine and a heteroatom-stabilized carbene. The invention additionally provides a method for synthesizing precursors to carbene ligands useful, inter alia, in the aforementioned one-pot synthesis. The precursors are in the form of trichloromethyl adducts of the formula L 1 -CCl 3 , where L 1 is a heteroatom-stabilized carbene ligand, and are prepared by contacting an unsaturated, ionized analog of L-CCl 3 with a non-nucleophilic base in the presence of chloroform.