Well-Defined Alkyl Heteroscorpionate Magnesium Complexes as Excellent Initiators for the ROP of Cyclic Esters

2007 ◽  
Vol 26 (25) ◽  
pp. 6403-6411 ◽  
Author(s):  
Luis F. Sánchez-Barba ◽  
Andrés Garcés ◽  
Mariano Fajardo ◽  
Carlos Alonso-Moreno ◽  
Juan Fernández-Baeza ◽  
...  
Keyword(s):  
Cyclic Esters ◽  
Magnesium Complexes

Synthesis and catalytic application of magnesium complexes bearing pendant indolyl ligands

2015 ◽  
Vol 44 (20) ◽  
pp. 9610-9619 ◽  
Author(s):  
Kuo-Fu Peng ◽  
Yun Chen ◽  
Chi-Tien Chen
Keyword(s):  
Benzyl Alcohol ◽  
Cyclic Esters ◽  
Catalytic Application ◽  
Magnesium Complexes

A family of magnesium pendant indolyl complexes has been prepared and it exhibited high activities towards the ROP of cyclic esters in the presence of benzyl alcohol.

scholarly journals Zinc and Magnesium Complexes Bearing Oxazoline-Derived Ligands and Their Application for Ring Opening Polymerization of Cyclic Esters

ACS Omega ◽  
2018 ◽  
Vol 3 (9) ◽  
pp. 11703-11709 ◽  
Author(s):  
Ranlong Duan ◽  
Chenyang Hu ◽  
Zhiqiang Sun ◽  
Xuan Pang ◽  
Xuesi Chen
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Esters ◽  
Magnesium Complexes

scholarly journals Mono-BHT heteroleptic magnesium complexes: synthesis, molecular structure and catalytic behavior in the ring-opening polymerization of cyclic esters

2017 ◽  
Vol 46 (36) ◽  
pp. 12132-12146 ◽  
Author(s):  
I. E. Nifant'ev ◽  
A. V. Shlyakhtin ◽  
V. V. Bagrov ◽  
M. E. Minyaev ◽  
A. V. Churakov ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Catalytic Behavior ◽  
Cyclic Esters ◽  
Magnesium Complexes

Dimeric BHT-alkoxy magnesium complexes are able to catalyze ROP of lactones and lactides by the binuclear mechanism.

Determination of δ-hexadecansultone in sodium α-olefinesulphonates and liquid detergents using gas chromatography-mass spectrometry (GC/MS)

2019 ◽  
Vol 85 (7) ◽  
pp. 16-21
Author(s):  
Liliya R. Mubarakova ◽  
German K. Budnikov
Keyword(s):  
Multicomponent Mixture ◽  
Operating Mode ◽  
Complete Separation ◽  
Gas Chromatography Mass Spectrometry ◽  
Liquid Detergent ◽  
Cyclic Esters ◽  
Alcohol Water ◽  
Household Chemicals ◽  
Hydrolysis Of

Sultones are cyclic esters of hydroxysulfonic acids, which are formed in the process of sulfonation of α-olefins with sulfur trioxide gas. More stable sultones may be present in the final product — an anionic surfactant — sodium α-olefin sulfonate (AOC-Na). AOC-Na is widely used in the production of household chemicals and cosmetic products, including liquid dishwashing detergents. Sultones are strong skin sensitizers, their level in AOC-Na should be strictly controlled and not exceed 5 ppm. Operational and strict control of the sultone content upon AOC-Na production allows timely adjustment at the stage of hydrolysis, which leads to a more complete disclosure of the sultone cycle with the formation of the corresponding olefin sulfonates and hydroxyalkanesulfonates. We propose a method for determining δ-hexadecansultone in liquid dishwashing detergents and sodium α-olefinsulfonates obtained on the basis of α-olefins of C14 – C16 fractions using GC/MS, which provides shortening of sample preparation and keeps the sensitivity with a detection limit of 0.02 mg/kg. The effect of various weakly polar and non-polar organic solvents used for Sultone extraction from AOC-Na and liquid detergent on liquid extraction based on the dispersion of the extractant in an alcohol/water phase is studied. When selecting the solvent we have shown that the use of diethyl ether provided the best extraction of the analyte. Determination of the analyte extraction recovery was performed using the reaction of hydrolysis of the extracted mixture. We specified the operating mode of the device which provided complete separation of the components of the analyzed compounds including the samples of liquid detergent for dishes being a multicomponent mixture of complex composition.

Magnesium complexes of ladanein: a beneficial strategy for stabilizing polyphenolic antivirals

2021 ◽  
Author(s):  
Xavier Martin-Benlloch ◽  
Don Antoine Lanfranchi ◽  
Sibylle Haid ◽  
Thomas Pietschmann ◽  
Elisabeth Davioud-Charvet ◽  
...  
Keyword(s):  
Magnesium Complexes

A switchable dimeric yttrium complex and its three catalytic states in ring opening polymerization

2021 ◽  
Author(s):  
Shijie Deng ◽  
Paula L. Diaconescu
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Oxidation States ◽  
Cyclic Esters

A dimeric yttrium phenoxide complex can be oxidized in a stepwise fashion to access three oxidation states. The three states show different activity in the ring opening polymerization of cyclic esters and epoxides.

Equilibria in the 3-(trifluoromethyl)phenylboronic acid - boroxine system. Solubility of the acid and its cyclic esters in organic solvents

2021 ◽  
pp. 121947
Author(s):  
Paweł Leszczyński ◽  
Tadeusz Hofman ◽  
Ewa Kaczorowska ◽  
Agnieszka Adamczyk-Woźniak ◽  
Andrzej Sporzyński
Keyword(s):  
Organic Solvents ◽  
Phenylboronic Acid ◽  
Cyclic Esters

scholarly journals Bright luminescent lithium and magnesium carbene complexes

2021 ◽  
Author(s):  
Piermaria Pinter ◽  
Christoph M. Schüßlbauer ◽  
Fabian A. Watt ◽  
Nicole Dickmann ◽  
Regine Herbst-Irmer ◽  
...  
Keyword(s):  
Pincer Ligand ◽  
Carbene Complexes ◽  
Magnesium Complexes

Lithium- and magnesium complexes of a CNC pincer ligand composed of carbazole and two mesoionic carbenes are bright luminescent, because the metals prevent molecular distortions upon excitation.

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