CAS: 593-49-7; Heptacosane

相似化合物

630-02-4 638-67-5 112-40-3

上下游产品

13,14,14-trichloro-heptacosane heptacosan-14-one hydrogenchloride azelaic acid

壬二酸置于氯化亚砜,一水合肼,Magnesium,溶剂黄146体系中,用 乙醚,辛醇 作为反应溶剂,化学反应 60.33H,反应生成 正二十七烷
参考文献:奇数正构烷烃c 21,C 23,C 25,C 27和c 29的固溶和熔融转变的温度和焓
标题:奇数正构烷烃c 21,C 23,C 25,C 27和c 29的固溶和熔融转变的温度和焓
摘要:通过合成制备了极高纯度的正戊烷和庚烷的样品:描述了c 25和c 27的合成方法及其纯化的原始条件,特别是使用超临界二氧化碳萃取的方法.通过差示扫描量热法对c 25和c 27合成样品以及奇数同源正构烷烃(从c 21到c 29)进行了固-固转变和熔融转变的温度和焓的测量.结果显示了杂质影响的重要性,特别是对于c的δ和γ晶-晶转变温度25和c 27.还显示了有关这五个正构烷烃的温度,固-固和熔融转变的焓的文献的一些最新数据.
DOI:10.1021/je0003501

专利信息

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.

专利号:US-8580542-B2
优先权日:2011-02-10
标 题 :Methods and compositions for producing alkenes of various chain length
发明人：RIDLEY CHRISTIAN P
权利人:RIDLEY CHRISTIAN P; JOULE UNLTD TECHNOLOGIES INC
摘要:The NonA alkene synthase in Synechococcus sp. displays selective synthesis of 1-nonadecene. Heterologous recombination of a domain, i.e. the acyl binding domain, with other acyl binding proteins, affects acyl substrate chain-length binding selectivity and therefore the chain-length of the synthesized 1-alkenes. Compositions and methods are provided to selectively synthesize 1-alkenes of various chain lengths.

专利号:US-12194020-B2
优先权日:2017-12-22
标 题:Reversing baldness through cannabinoid receptor activation
发明人：POSTREL RICHARD
权利人:POSTREL RICHARD
摘要:This invention reverses male pattern baldness by shocking dormant hair follicles out of their androgen induced hibernation phase back to the active hair-growing anagenic phase. The invention integrates two functions: 1) It blocks synthesis of compounds holding the follicles in the telogenic/hibernating phase and 2) It stimulates synthesis of compounds animating the hair-growing/anagenic phase in the follicular activity cycle. One preferred embodiment comprises an enzyme inhibitor blocking the conversion of testosterone to dihydrotestosterone (DHT), a flavonoid simultaneously increasing synthesis of prostaglandins alternative to prostaglandin D2, and a selected cannabinoid compound stimulating restore the hair follicle to its normal growth cycle. This novel trimodal therapy restores the hair follicles to their normal cycling processes and maintains these restorative properties so long as this rebalance in maintained.

专利号:US-2013089740-A1
优先权日:2010-06-29
标题:Synthesis and use of iron oleate
发明人：BURDINSKI DIRK; BOHLENDER CARMEN
权利人:BURDINSKI DIRK; BOHLENDER CARMEN; KONINKL PHILIPS ELECTRONICS NV
摘要:The present invention relates to a method of forming an iron oleate complex comprising the steps of: (a) dissolving an oleate in a low-order alcohol solvent at a temperature of about 35° C. to 65° C.; (b) adding a non-polar solvent to the solution of step (a); (c) adding an iron salt dissolved in a low-order alcohol to the solution of step (b); (d) agitating the solution of step (c) at a temperature of about 50° C. for at least 5 min; (e) cooling the reaction mixture of step (d) to a temperature of about 15° C. to 30° C.; (f) optionally filtering the reaction mixture of step (e); (g) separating the non-polar solvent phase from the low-order alcohol phase; (h) washing and drying the non-polar solvent phase; (i) removing volatiles from the non-polar solvent phase of step (h) by evaporation; and (j) mixing the product of step (i) with a polar solvent to yield a solid iron oleate complex. The present invention further relates to an iron oleate complex obtainable by the method of the invention, an iron oleate complex of formula I, the use of the iron oleate complex of the invention as precursor for the preparation of nanoparticles, and a method of forming iron oxide nanoparticles comprising the suspension of iron oxide/hydroxide and the iron oleate complex of the invention.