[EN] TRIAMINOCYCLOPROPENIUM SALTS<br/>[FR] SELS DE TRIAMINOCYCLOPROPÉNIUM
申请人:CURNOW OWEN JOHN
公开号:WO2012169909A1
公开(公告)日:2012-12-13
Disclosed are salts comprising triaminocyclopropenium cations and various anions, and ionic liquids comprising the salts. Also disclosed are intermediates and methods of preparing the salts. The ionic liquids are useful as, for example, solvents and electrolytes, and for gas storage.
polymerization technique has been used in the preparation of poly(organotin phosphonates). Dialkyltin dichloride, tetraalkyldichlorodistannoxane or hexaalkyldichlorotristannoxane dissolved in an organic solvent immiscible with water was brought into reaction with the disodium salt of phenylphosphonic acid to give the corresponding poly(organotin phosphonate). The solubility of the polymers in organic
Highly associated complexes have been formed between dibutylphosphoric acid and the cations: Cu(II), UO2(II), Fe(III), Y(III), Al(III), and Th(IV). 32P-labelled dibutylphosphoric acid was used to assist in the analysis of the compounds. Metathesis of the solid Th(IV) complex with aqueous sodium hydroxide was complete, suggesting a practical method for removing the complexes from solvents and equipment
Phosphorylation of trivalent metal tris(3-bromo-2,4-pentanedionates)
作者:N. P. Shapkin、O. A. Apanasenko、A. S. Skobun、T. A. Ivanova
DOI:10.1007/s11176-005-0012-9
日期:2004.9
Reactions of chromium(III) and cobalt (III) tris(3-bromo-2,4-pentandionates) with sodium dibutyl phosphate, sodium dibutylphosphinate, sodium dibutyl dithiophosphate, and sodium dibutyldithiophosphinate were studied. Oxygen-containing derivatives of phosphorus acids give metal polyphosphates and polyphosphonates, and in the case of sodium dibutyl phosphate, a bromine substitution product was isolated in 3% yield. The reactions of the chelates with sodium dibutyl dithiophosphate and sodium dibutyldithiophosphinate, substitution products were isolated in 54% and 65% yields, respectively. The reactions all involved reductive dehalogenation along with substitution.
Selective Axial-to-Equatorial Epimerization of Carbohydrates
作者:Hayden M. Carder、Yong Wang、Alison E. Wendlandt
DOI:10.1021/jacs.2c04743
日期:2022.7.6
Radical-mediated transformations have emerged as powerful methods for the synthesis of rare and unnatural branched, deoxygenated, and isomeric sugars. Here, we describe a radical-mediated axial-to-equatorial alcohol epimerization method to transform abundant glycans into rare isomers. The method delivers highly predictable and selective reaction outcomes that are complementary to other sugar isomerization
自由基介导的转化已成为合成稀有和非天然支链、脱氧和异构糖的有效方法。在这里,我们描述了一种自由基介导的轴向到赤道醇差向异构化方法,可将丰富的聚糖转化为稀有异构体。该方法提供高度可预测和选择性的反应结果,与其他糖异构化方法互补。异构体相互转化的合成效用通过方便的聚糖合成展示,包括一步糖多样化。机理研究表明,位点选择性和非对映选择性都是通过赤道位置的 α-羟基 C-H 键的高选择性 H 原子提取来实现的。