The reaction of primary aromatic amines with alkylene carbonates for the selective synthesis of bis-N-(2-hydroxy)alkylanilines: the catalytic effect of phosphonium-based ionic liquids
Dichotomous Reactivity in the Reaction of Triethyl- and Triphenylphosphane HBr Salts with Dimethyl Acetals: A Novel Entry to α-Alkoxy-Functionalized Ylides and General Synthesis of Vinyl Ethers and Alkoxy Dienes
作者:Priyabrata Das、James McNulty
DOI:10.1002/ejoc.201000601
日期:2010.7
discovery of dichotomousreactivity in the reaction of trialkyl- vs. triphenylphosphaneHBrsalts with acetals allows entry to functionalized α-methoxy phosphonium salts and a novel process for tertiary phosphane methylation. The new protocol opens a generalentry to the synthesis of vinylethers and differentially substituted 1,3-dienes via Wittig reactions of the functionalized ylides derived from
Non-polymeric binders for ceramic powders: utilization of neutral and ionic species derived from decaborane(14)
作者:William S. Rees、Dietmar Seyferth
DOI:10.1007/bf00544490
日期:1989.12
The pyrolytic conversion of bis-Lewis base adducts of decaborane(14), L·B10H12·L (L=neutral monophosphine) and phosphonium salts of the [B10H10]2− anion (e.g. [Ph4P+]2, etc.), to ceramic materials has been studied. All species examined served as binders for a variety of non-oxide refractory ceramic powders (e.g. B4C, BN, BP, B13P2, SiC, Si3N4, B, C, AIN).
Exploring an Umpolung strategy for quaternization of phosphorus
作者:Anna C. Vetter、Kirill Nikitin、Declan G. Gilheany
DOI:10.1080/10426507.2018.1541242
日期:2019.5.27
phosphonium salts R3PR1 X (X = Cl, Br) from phosphine oxides R3PO. The new organic group R1 is introduced via nucleophilicattack on an intermediate halophosphonium salt using a Grignard reagent R1MgX and replaces the traditional phosphine quaternization approach. Consequently, the new method does not suffer from the limited availability of many parent phosphines and is much faster than standard quaternization
room temperature ionic liquids based on quaternaryphosphonium cations together with a dicyanamide anion are presented in this report. The most dicyanamide-based phosphonium ionic liquids prepared were hydrophilic, except ionic liquids containing a long alkyl chain in the phosohonium cation. It was found that asymmetric phosphonium cations gave low-melting salts in combination with a dicyanamide anion
Solubility of acyclovir in nontoxic and biodegradable ionic liquids: COSMO-RS prediction and experimental verification
作者:Meysam Lotfi、Muhammad Moniruzzaman、Magaret Sivapragasam、Shalini Kandasamy、M.I. Abdul Mutalib、Noorjahan Banu Alitheen、Masahiro Goto
DOI:10.1016/j.molliq.2017.08.020
日期:2017.10
conductor-like screening model for real solvents (COSMO-RS) calculations. The predictedsolubilities were validated by experimental measurements, and good agreement was found between the predicted and experimental results. The solubility of ACV was greatly affected by the structure of ILs, particularly the anionic moiety. Among the various ILs tested, ACV showed excellent solubility in ammonium-based ILs