Results 81 to 90 of about 3,243 (121)
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Kinetic resolution of phosphoric diester by Cinchona alkaloid derivatives provided with a guanidinium unit

, 2016
Cinchona alkaloid derivatives featuring a guanidinium group in diverse positions efficiently catalyze the cleavage of the RNA model compound 2-hydroxypropyl p-nitrophenyl phosphate (HPNP).
R. Salvio   +6 more
semanticscholar   +1 more source

(.+-.)-1,1′-Binaphthalene-2,2′-diol-derived Phosphoric Diester: Immobilization on Polyethylene Glycol Support and Application in the Pudovik Reaction.

, 2012
Racemic PEG-supported-1,1′-binaphthalene-2,2′-diphosphoric acids are synthesized using a click chemistry approach as key step.
I. Beletskaya   +2 more
semanticscholar   +1 more source

Enantioselective allylic thioetherification: the effect of phosphoric acid diester on iridium-catalyzed enantioconvergent transformations.

Angewandte Chemie, 2012
You'll take the high road and I'll take the low road: Enantioenriched allylic thioethers have been synthesized from chiral racemic allylic alcohols.
Markus Roggen, E. Carreira
semanticscholar   +1 more source

Template-Dependent Selectivity in Metal Adsorption on Phosphoric Diester-Carrying Resins Prepared by Surface Template Polymerization Technique.

, 1996
The surface templated resins for three different metal ions such as Cu2+, Zn2+ or Cd2+ as the template guest were prepared by emulsion polymerization using oleyl phenyl hydrogenphosphate as a host surfactant, sodium dodecyl sulfate (SDS) as a co ...
M. Murata   +3 more
semanticscholar   +1 more source

Enantioselective Allylic Thioetherification: The Effect of Phosphoric Acid Diester on Iridium‐Catalyzed Enantioconvergent Transformations.

, 2013
The effect of phosphate as a catalyst in combination with its properties as a leaving group is exploited in an enantioconvergent thioetherification of racemic allylic alcohols.
Markus Roggen, E. Carreira
semanticscholar   +1 more source

Design of readily accessible, noncovalently tunable, and versatile chiral organic salt catalysts incorporating achiral phosphoric acid diesters

Chemistry Letters
Chiral organic salts, composed of a specific chiral cyclic β-aminoguanidine and an optional achiral phosphoric acid diester, were designed and demonstrated to serve as readily accessible, noncovalently tunable, and versatile asymmetric organocatalysts.
Sojiro Koshimo   +5 more
semanticscholar   +1 more source

Enantioselective Intramolecular Nicholas Reaction Catalyzed by Chiral Phosphoric Acid: Enantioconvergent Synthesis of Seven-Membered Cyclic Ethers from Racemic Diols.

Angewandte Chemie, 2018
An enantioconvergent intramolecular Nicholas reaction of racemic diols was developed using BINOL- and SPINOL-derived phosphoric acids as the chiral Brønsted acid catalyst.
Y. Ota, Azusa Kondoh, M. Terada
semanticscholar   +1 more source

Synthesis and reactivity of a bis(hydroxido)‐bridged dicopper(II) complex: hydrolysis of carboxylate esters and coordination polymer with phosphate diester

European Journal of Inorganic Chemistry
Anaerobic reaction between solution‐generated copper(I) species ‘[(L3)CuI(MeCN)]+’ (L3 is an unsymmetrical tridentate ligand: methyl[2‐(2‐pyridyl)ethyl](2‐pyridylmethyl)amine) and dry O2 in CH2Cl2, after usual workup under a dinitrogen atmosphere ...
R. Mukherjee   +3 more
semanticscholar   +1 more source

Guanidinium Promoted Cleavage of Phosphoric Diesters: Kinetic Investigations and Calculations Provide Indications on the Operating Mechanism.

Journal of Organic Chemistry, 2017
The catalytic activity of the guanidinium units toward the cleavage of phosphoric diesters is deeply investigated both with kinetic experiments and DFT calculations. The first part of the investigation aims to determine how the structure of the substrate
R. Salvio, A. Casnati
semanticscholar   +1 more source

In the Bottlebrush Garden: The Structural Aspects of Coordination Polymer Phases formed in Lanthanide Extraction with Alkyl Phosphoric Acids.

Journal of Physical Chemistry B, 2015
Coordination polymers (CPs) of metal ions are central to a large variety of applications, such as catalysis and separations. These polymers frequently occur as amorphous solids that segregate from solution.
R. Ellis   +5 more
semanticscholar   +1 more source

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