[EN] PROCESS FOR PREPARING AGGLOMERATED CRYSTALLINE MEDIUM-CHAIN FATTY ACID SODIUM SALTS [FR] PROCÉDÉ DE PRÉPARATION DE SELS DE SODIUM D'ACIDE GRAS À CHAÎNE MOYENNE CRISTALLINS AGGLOMÉRÉS
摘要:
The process of the present invention is used to prepare agglomerated, crystalline particles of medium chain fatty acid sodium salts, such as sodium caprate. This process comprises the steps of: a) dissolving a medium chain fatty acid in a first solvent to produce a first solution, wherein the first solvent comprises an aprotic polar solvent; b) adding to the first solution (i) a second solvent, wherein the second solvent comprises a medium chain aliphatic hydrocarbon solvent, and (ii) a solution comprising a sodium salt of a short chain alcohol to create a resulting slurry; and c) isolating agglomerated crystals from the resulting slurry. The first solvent may comprise acetonitrile, and the second solvent may comprise heptane. Further provided are products generated by this process, including sodium caprate products having superior flowability and compression properties.
Palladium-Catalyzed Cross-Coupling Reactions of Carboxylic Anhydrides with Organozinc Reagents
作者:Donghui Wang、Zhaoguo Zhang
DOI:10.1021/ol035801w
日期:2003.11.1
[reaction: see text] Negishi-type cross-coupling reaction was effected by employing organozincs and anhydrides or mixedanhydrides that formed in situ fromsodiumsalts of the corresponding acids and ethyl chloroformate under the catalysis of palladium(0). A general method for preparing symmetrical/unsymmetrical ketones was developed.
Process for the production of fluorinated organic compounds and fluorinating agents
申请人:——
公开号:US20030176747A1
公开(公告)日:2003-09-18
A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF
5
; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a fluorinating agent containing IF
5
and at least one member selected from the group consisting of acids, bases, salts and additives.
A comparison of thermal characteristics of Cu(II) carboxylates and their complexes with pyridine
作者:S. Petriček、M. Petrič
DOI:10.1016/s0040-6031(97)00077-4
日期:1997.10
2 ( R CO 2 ) 4 and Cu 2 ( R CO 2 ) 4 py 2 ( R = CH 3 (CH 2 ) n −2 ; n = 7, 8, 9, 10, 12) were done to compare their thermal behavior and establish the influence of pyridine in complexes on phase transition from solid state to liquid crystalline phase. Transitions from a crystalline to a liquid crystalline phase were observed for all Cu 2 ( R CO 2 ) 4 compounds, but only for pyridinecomplexes of Cu(II)
摘要 Cu 2 ( R CO 2 ) 4 和Cu 2 ( R CO 2 ) 4 py 2 ( R = CH 3 (CH 2 ) n -2 ; n = 7, 8, 9, 10, 12)的TG和DTA测量进行了比较它们的热行为并确定吡啶在复合物中对从固态到液晶相的相变的影响。对于所有Cu 2 (R CO 2 ) 4 化合物,观察到从结晶相到液晶相的转变,但仅对于壬酸、癸酸和十二酸Cu(II)的吡啶配合物观察到。吡啶配合物的转变温度低于相应的Cu 2 (R CO 2 ) 4 。在刚好高于熔化温度重复加热时,Cu 2 (R CO 2 ) 4 py 2 复合物分解为Cu 2 (R CO 2 ) 4 ,其在较高温度下经历已知的结晶到液晶相转变。
Process for preparing phenyl esters of substituted acids
申请人:E. I. Du Pont de Nemours and Company
公开号:US05235077A1
公开(公告)日:1993-08-10
An improved process for preparing phenyl esters of alkanoyloxyacetic acids in which phenyl chloroacetate is reacted with the salt of a carboxylic acid.
一种改进的制备烷酰氧乙酸苯酯的方法,其中苯氯乙酸酯与羧酸盐发生反应。
Copper(II) carboxylates with 2-aminopyridine. Synthesis, characterization and a study of the dimer–monomer equilibrium in acetonitrile solutions by VIS-spectroscopic and microcalorimetric titrations
by X-ray diffraction. VIS-absorption spectroscopic and isothermal calorimetric titrations, were employed to investigate the dimer–monomer equilibrium in acetonitrilesolutions. The results were analysed on the basis of the mass-action model to obtain the equilibrium constants of monomer formation (KM ≈ 104 L mol−1). The thermodynamic analysis shows that for all studied systems monomer formation is an
制备了一系列具有2-氨基吡啶的羧酸铜(II)。在所有情况下,均获得了具有桨轮式结构的典型双核配合物Cu 2 X 4 L 2以及CuX 2 L 2类型的单核配合物 (X =己酸酯,庚酸酯,辛酸酯或壬酸酯,L = 2-氨基吡啶)。单斜Cu的结构2(O 2 CC 7 ħ 15)4(C 5 H ^ 6 Ñ 2)2,1,和Cu(O 2 CC 7 ħ 15)2(C 5 H ^ 6 Ñ 2)2,2,通过X射线衍射确定。VIS吸收光谱和等温滴定法用于研究乙腈溶液中的二聚体-单体平衡。对结果进行分析的质量作用模型的基础上,以获得的单体形成(平衡常数ķ中号 ≈10 4大号摩尔-1)。热力学分析表明,对于所有研究的系统,单体形成都是由焓驱动的过程(ΔH M °≈-14 kJ mol -1)。观察到的放热ΔHM °值极有可能是由于Cu 2+离子与2-氨基吡啶之间有吸引力的配位相互作用引起的。