Hydro-ionothermal syntheses, crystal structures, and properties of five new divalent metal iminophosphonates
作者:Kevin J. Gagnon、Andrey V. Prosvirin、Kim R. Dunbar、Simon J. Teat、Abraham Clearfield
DOI:10.1039/c2dt11907b
日期:——
hydrophobic ionicliquid 1-butyl-2,3-dimethylimidazolium tetrafluoroborate ([BdMIM][BF4]) with water as a cosolvent, while 2 has been synthesized from identical conditions in the absence of the [BdMIM][BF4]. We also report the microwave assisted hydro-ionothermal synthesis of the known polymorph of 2, Co(H2O)2(HO3PCH2NH2CH2PO3H)2, (6), synthesized in two hours providing high quality crystals in good yield
In Situ Generation of Organic Peroxide to Create a Nanotubular Uranyl Peroxide Phosphate
作者:Dmytro V. Kravchuk、Tori Z. Forbes
DOI:10.1002/anie.201910287
日期:2019.12.16
for uranylperoxide materials introduce high initial concentrations of aqueous H2 O2 that decline over time. Alternatively, in situ generation of organic peroxide would maintain constant concentrations of peroxide over prolonged periods of time and open new pathways to novel uranylperoxide compounds. Herein, we demonstrate this concept through the synthesis of a nanotube-like uranylperoxide phosphate
当前用于过氧化铀酰材料的合成途径引入了高的H 2 O 2水溶液初始浓度,该浓度随时间下降。可替代地,有机过氧化物的原位生成将在延长的时间段内保持恒定的过氧化物浓度,并为新的双氧铀酰化合物开辟新的途径。在这里,我们通过合成纳米管状磷酸双氧铀酰(NUPP),Na12 [(UO2)(μ-O2)(HPO4)] 6(H2 O)40来证明这一概念,并利用了苯甲醛的自氧化作用在膦酸酯配体存在下于苄醇溶液中溶解。NUPP的独特特征是弯曲的二面角U-(μ-O2)-U(123.9°±0.4°至124.6°±0.5°),这使得六聚铀酰过氧化物大环化合物可以采用纳米管拓扑结构并防止纳米胶囊的形成。
N-Sulfo alkane amino alkane phosphoric acids and their alkali metal
申请人:Benckiser-Knapsack GmbH
公开号:US04216163A1
公开(公告)日:1980-08-05
Novel and highly advantageous N-sulfo alkane amino alkane phosphonic acids and their alkali metal salts are provided. Said phosphonic acids are produced by reacting an alkali metal salt of an amino phosphonic acid with a halo, preferably chloro, or hydroxy alkane sulfonic acid or their alkali metal salts in an alkaline medium, while heating. In place of the halo and especially chloro or hydroxy alkane sulfonic acid reactants, there can also be used compounds which are capable of producing hydroxy alkane sulfonates such as carbylsulfate or aldehydes or, respectively, ethylene oxide with alkali metal bisulfites or metasulfites. The reaction is preferably carried out in a molar proportion of about 1:1 to about 1:2. The novel compounds are excellent complexing or sequestering agents especially with respect to polyvalent metal ions. They are highly resistant against hydrolysis and high temperatures and are of a very high water solubility.
Selective and clean synthesis of aminoalkyl-<i>H</i>-phosphinic acids from hypophosphorous acid by phospha-Mannich reaction
作者:Peter Urbanovský、Jan Kotek、Ivana Císařová、Petr Hermann
DOI:10.1039/d0ra03075a
日期:——
Aminoalkyl-H-phosphinic acids, also called aminoalkylphosphonous acids, are investigated as biologically active analogues of carboxylic amino acids and/or as valuable intermediates for synthesis of other aminoalkylphosphorus acids. Their synthesis has been mostly accomplished by phospha-Mannich reaction of a P–H precursor, an aldehyde and an amine. The reaction is rarely clean and high-yielding. Here, reaction of H3PO2
氨基烷基-H-次膦酸,也称为氨基烷基亚膦酸,被研究作为羧酸氨基酸的生物活性类似物和/或作为合成其他氨基烷基磷酸的有价值的中间体。它们的合成主要是通过 P-H 前体、醛和胺的 phospha-Mannich 反应完成的。该反应很少是干净和高产的。在这里,H 3 PO 2与仲胺和甲醛在湿 AcOH 中的反应以几乎定量的产率产生氨甲基-H-次膦酸,并且几乎没有副产物。令人惊讶的是,反应结果取决于胺的碱性。p K a胺> 7-8 给出了所需的产品。对于弱碱性胺,还原性N-甲基化与H 3 PO 2氧化成H 3 PO 3相结合成为相关的副反应。伯胺的反应不太明显,只有非常碱性的胺才能获得氨基-双(甲基-H-次膦酸)。醛含量较高的反应产率较低。获得了源自多胺的独特的羧酸-次膦酸-膦酸以及聚(H-次膦酸)。氨基烷基-H的合成用途-次膦酸在 P-H 键氧化及其对双键的加成以及选择性胺脱保护中得到说明。具有乙
Tritylamine (triphenylmethylamine) in organic synthesis; III. The synthesis of 1-aminoalkylphosphonic acids in the reaction of N-(triphenylmethyl)alkanimines with phosphorus trichloride in acetic acid or with phosphonic acid in acetic anhydride.
作者:Miroslaw Soroka、Waldemar Goldeman
DOI:10.3998/ark.5550190.0011.b29
日期:——
The reaction of phosphorus trichloride in acetic acid or phosphonic (phosphorous) acid in aceticanhydride, with N-(triphenylmethyl)alkanimines gives 1-acetylaminoalkylphosphonic acids 1a-j, which after hydrolysis give 1-aminoalkylphosphonic acids 2a-j in good yields.