CAS: 630-01-3; N-Hexacosane

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CAS号412023-29-1 hexacosan-9-one | CAS号17049-49-9 正辛基镁溴盐 | CAS号638-65-3 硬脂腈 | CAS号19816-73-0 tetradecanepero... | CAS号3041-23-4 tri°Ctadecylalu... | CAS号54509-73-8 ethene | CAS号1070-00-4 三辛基铝溶液 | CAS号35599-77-0 TRIDECANE,1-IODO | CAS号112-70-9 十三醇 | CAS号28267-29-0 十三酸乙酯 | CAS号112-92-5 硬脂醇 | CAS号629-96-9 1-二十醇 | CAS号593-50-0 三十烷醇 | CAS号661-19-8 正二十二醇 | CAS号506-51-4 二十四醇 | CAS号506-52-5 二十六碳醇 | CAS号557-61-9 1-二十八烷醇

十三烷醇置于磷化氢,乙醚,碘,Magnesium体系中,化学反应生成 正二十六烷
参考文献:Levene; West; Van Der Scheer,Journal Of Biological Chemistry,1915,Vol. 20,P. 527
标题:Levene; West; Van Der Scheer,Journal Of Biological Chemistry,1915,Vol. 20,P. 527

专利信息

专利号:US-4592874-A
优先权日:1980-05-14
标 题:Process for the synthesis of alpha-chlorinated chloroformates
发明人：CAGNON GUY C; PITEAU MARC D; SENET JEAN-PIERRE G; OLOFSON ROY A; MARTZ JONATHAN T
权利人:POUDRES & EXPLOSIFS STE NALE
摘要:Process for the synthesis of alpha -chlorinated chloroformates, and new alpha -chlorinated chloroformates. The invention relates to a new process for the manufacture of alpha -chlorinated chloroformates and, to new alpha -chlorinated chloroformates as new industrial products. The process according to the invention consists of a synthesis, by catalytic phosgenation, of alpha -chlorinated chloroformates of the formula: in which: R represents a substituted or unsubstituted hydrocarbon radical and m represents an integer superior or equal to one, this synthesis consisting in reacting phosgene with the aldehyde R-CHO)m, in the presence of a catalyst which is an organic or inorganic substance which is capable in a medium containing an aldehyde of the formula R-CHO)m, phosgene and, possibly, a solvent, of generating a pair of ions one of which is an halogenide anion and the other is a cation which is sufficiently separated from said halogenide anion so as to give to the latter a nucleophilic power enabling it to react with the function(s) aldehyde of the molecule R-CHO)m.

专利号:US-5886190-A
优先权日:1993-10-04
标 题:Rapid synthesis and use of 18F-fluoromisonidazole and analogs
发明人：WALLACE SIDNEY; YANG DAVID J; CHERIF ABDALLAH
摘要:The present invention involves a rapid synthesis of 18F-FMISO and analogs thereof. New precursors such as 1-(2'-nitro-1'-imidazolyl)-2-0-acetyl-3-0-tosylpropanol, glycerol-1,3-ditosylate-2-0-acetylate, 1-(2'-nitro-1'-imidazolyl)-2,3-0-diacetyl-4-0-tosylbutanol and threitol 1,4-di-tosylate-2,3-0-diacetylate, are also important aspects of the invention. A further aspect of the invention is the development of a hydrophilic PET ligand to image tumor hypoxia. Erythrotosyl analogue of 2-nitroimidazone (Ts-ETNIM) was prepared from a mixture of 2-nitromidazole, ditosylthreitol and cesium carbonate at 60 DEG C. for 1 hr. Ts-ETNIM was isolated at 70% yield. [18F]fluoroerythronitroimidazole (FETNIM) was then prepared from Ts-ETNIM and K18F/kryptofix TM . The yield for [18F]FETNIM was 26-30% (60 min, decay corrected). Results of biodistribution and PET studies indicate that [18F]FETNIM has the potential to detect tumor hypoxia and is indicated to be less neurotoxic.

专利号:US-11945764-B2
优先权日:2021-06-09
标 题:Efficient synthesis of diglycolamide molecules
发明人：JANSONE-POPOVA SANTA; POPOVS ILJA
权利人:UT BATTELLE LLC
摘要:A method for producing a diglycolamide molecule having the formula: n nwherein R 1 and R 2 are independently selected from alkyl groups (R) and acyl groups (C(O)R) in which the alkyl groups (R) contain 1-30 carbon atoms and optionally contain an ether or thioether linkage between carbon atoms, and R 5 and R 6 are independently selected from hydrogen atom and alkyl groups containing 1-3 carbon atoms; and one or both pairs of R 1 and R 2 are optionally interconnected to form a ring; the method comprising: combining a diglycolic acid molecule (A) and a secondary amine (B) to form a salt intermediate (C), and heating the salt intermediate (C) to a temperature of 100° C. to 300° C. to form the diglycolamide of Formula (1) in a dehydration process, wherein the method is shown schematically as follows:

专利号:US-2013095043-A1
优先权日:2010-06-29
标题 :Synthesis of high-performance iron oxide particle tracers for magnetic particle imaging (mpi)
发明人：BURDINSKI DIRK; BOHLENDER CARMEN; HAEX NICOLE P M
权利人:BURDINSKI DIRK; BOHLENDER CARMEN; HAEX NICOLE P M; KONINKL PHILIPS ELECTRONICS NV
摘要:The present invention relates to a method of forming iron oxide nanoparticles comprising the steps of (a) suspending iron oxide/hydroxide and oleic acid or a derivative thereof in a primary organic solvent; (b) increasing the temperature of the suspension by a defined rate up to a maximum of 340° C. to 500° C.; (c) aging the suspension at the maximum temperature of step (b) for about 0.5 to 6 h; (d) cooling the suspension; (e) adding a secondary organic solvent; (f) precipitating nanoparticles by adding a non-solvent and removing excess solvent; (g) dispersing said nanoparticles in said secondary organic solvent; (h) mixing the dispersion of step (g) with a solution of a polymer; and (i) optionally removing said secondary organic solvent. The present invention further relates to an iron oxide nanoparticle obtainable by the method, the additional modification, encapsulation and decoration of such nanoparticles, as well as the use of the nanoparticles as tracers for Magnetic Particle Imaging (MPI), Magnetic Particle Spectroscopy (MPS).

专利号:EP-4151643-A1
优先权日:2021-09-16
标题 :Improved process for production of phosphoesters of glufosinate precursors
发明人：LAUTENSCHÃœTZ LUDGER; BRAUNE SASCHA; PÖTTER MARKUS
权利人:EVONIK OPERATIONS GMBH
摘要:SummaryThe present invention relates to a method for production of a compound according to formula (I):wherein R is alkyl, aryl, alkaryl, aralkyl,and wherein X is selected from the following structures (I-A), (I-B):wherein R¹, R² are independently selected from the group consisting of alkyl, aryl, alkaryl, aralkyl.The compounds according to formula (I) are important precursors in the synthesis of glufosinate, in particular L-glufosinate. In the method according to the present invention, easily accessible starting materials are employed. Thus, the method overcomes the disadvantages of prior art syntheses of L-glufosinate and its intermediates.

专利号:US-10227300-B2
优先权日:2015-01-22
标题 :Synthesis of triacetonediamine compounds by reductive amination proceeding from triacetonediamine and derivatives thereof
发明人：WILLY BENJAMIN; NIEMEYER JOCHEN; KREILKAMP GUENTER; VOM BRUCH BEATRIX; NEUMANN MANFRED; KEUP MICHAEL
权利人:WILLY BENJAMIN; NIEMEYER JOCHEN; KREILKAMP GUENTER; VOM BRUCH BEATRIX; NEUMANN MANFRED; KEUP MICHAEL; EVONIK DEGUSSA GMBH
摘要:An N-substituted triacetonediamine compound is prepared by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination, wherein reductive conditions are established by conducting the reaction in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst includes at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.