Highly Selective Ortho‐Directed Dicarboxylation of Cyclopentadiene by Methylcarbonates and CO
<sub>2</sub>
or COS – First Insight into Co‐ordination Chemistry of New Ambident Ligands
作者:Tobias Vollgraff、Jörg Sundermeyer
DOI:10.1002/chem.202100300
日期:2021.6.10
mechanism where the acidicproton of the monocarboxylic acid intermediate plays an ortho-directing and CO2 activating role for the second kinetically accelerated CO2 addition step exclusively in ortho position. The same and related thiocarboxylates [Cat]2[C5H3(COS)2H] are obtained by reaction of COS with Cat[Cp] (Cat=NR4+, PR4+, Im+). A preliminary study on [Cat]2[C5H3(CO2)2H] reveals, that its soft and hard
Halide-Free Synthesis of Hydrochalcogenide Ionic Liquids of the Type [Cation][HE] (E=S, Se, Te)
作者:Lars H. Finger、Jörg Sundermeyer
DOI:10.1002/chem.201504577
日期:2016.3.14
We present the synthesis and thorough characterization of ionic liquids and organic saltsbased on hydrochalcogenide HE− (E=S, Se, Te) anions. Our approach is based on halide‐, metal‐, and water‐free decarboxylation of methylcarbonate precursors under acidic conditions, resulting from the easily dissociating reagents H2E. The compounds were characterized by elemental analysis, multinuclear NMR spectroscopy
Access to pure and highly volatile hydrochalcogenide ionic liquids
作者:L. H. Finger、F. Wohde、E. I. Grigoryev、A.-K. Hansmann、R. Berger、B. Roling、J. Sundermeyer
DOI:10.1039/c5cc06224a
日期:——
The reaction of H2S with methylcarbonate salts allows access to pure hydrosulphide ILs, which show an astoundingly high volatility below 100 °C allowing high-end purification and ionic single crystal growth by sublimation.
Simple and recyclable ionic liquid based system for the selective decomposition of formic acid to hydrogen and carbon dioxide
作者:M. E. M. Berger、D. Assenbaum、N. Taccardi、E. Spiecker、P. Wasserscheid
DOI:10.1039/c0gc00829j
日期:——
development of systems for its storage and delivery. Formic acid has been proposed as valuable hydrogen carrier compound, due to its relatively high hydrogen content (53 g L−1), the latter being easily and cleanly released in catalytic reactions under mild conditions (HCOOH → H2 + CO2). Ionic liquids are interesting solvents for homogeneous catalyzed formic acid decomposition systems as their extremely
[EN] ESLICARBAZEPINE ACETATE AND ITS POLYMORPHS<br/>[FR] ACÉTATE D'ESLICARBAZÉPINE ET SES POLYMORPHES
申请人:REDDYS LAB LTD DR
公开号:WO2011091131A2
公开(公告)日:2011-07-28
Processes for the preparation of eslicarbazepine acetate and intermediates thereof. Also provided are polymorphic forms of eslicarbazepine acetate and methods for their preparation.