Ligand-free copper-catalysed direct synthesis of diaryl sulfides and diaryl disulfides in wet poly(ethylene glycol)

2016 ◽  
Vol 31 (3) ◽  
pp. e3579 ◽  
Author(s):  
Najmeh Nowrouzi ◽  
Mohammad Abbasi ◽  
Hadis Latifi
Keyword(s):  
Ethylene Glycol ◽  
Direct Synthesis ◽  
Poly Ethylene Glycol ◽  
Ligand Free ◽  
Poly Ethylene

Direct Synthesis of Deep Cavity p-Phenylcalix[4]arene in Poly(Ethylene Glycol), and its Self-Association in the Solid State

2006 ◽  
Vol 59 (4) ◽  
pp. 260 ◽  
Author(s):  
Mohamed Makha ◽  
Colin L. Raston ◽  
Alexandre N. Sobolev
Keyword(s):  
Solid State ◽  
Ethylene Glycol ◽  
Direct Synthesis ◽  
Reaction Medium ◽  
State Structure ◽  
Poly Ethylene Glycol ◽  
Solid State Structure ◽  
Deep Cavity ◽  
Self Association ◽  
Poly Ethylene

p-Phenylcalix[4]arene is formed directly from p-phenylphenol in 66% yield (50% isolated yield) using poly(ethylene glycol) as the reaction medium, with crystallization of the pure cavitand from toluene mediated by p-carborane. The solid-state structure comprises interlocking columnar arrays.

Ruthenium(II) Ions triggered direct supramolecular polymerization of bis-terpyridine poly(ethylene glycol): New Insights on synthesis and optimization

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Manuela Chiper ◽  
Richard Hoogenboom ◽  
Ulrich S. Schubert
Keyword(s):  
Molecular Weight ◽  
Ethylene Glycol ◽  
Direct Synthesis ◽  
Synthesis Method ◽  
Water Soluble ◽  
Poly Ethylene Glycol ◽  
Full Characterization ◽  
Vis Spectroscopy ◽  
Poly Ethylene ◽  
The Stability

AbstractIn order to obtain linear and high molecular weight Ru(II) coordination polymers, we investigated the reaction conditions for the direct one-step metallopolymerization of bis-terpyridine poly(ethylene glycol) 3 with RuCl3 in the presence of reducing agents. Here we discuss the direct synthesis method, the optimization and the purification of the water soluble Ru(II) chain extended poly(ethylene glycol). The optimization of the metallo-polymerization was monitored by SEC. For the highest molecular weight Ru(II) coordination polymer 4 obtained in this study, full characterization was performed by 1H-NMR and UV-Vis spectroscopy as well as SEC proof for the formation and the stability of the designed structure

Direct Synthesis of Cup-Stacked Carbon Nanofiber Microspheres by the Catalytic Pyrolysis of Poly(ethylene glycol)

Langmuir ◽  
2012 ◽  
Vol 28 (23) ◽  
pp. 8760-8766 ◽  
Author(s):  
Seongjae Ko ◽  
Yusuke Takahashi ◽  
Akiyoshi Sakoda ◽  
Yasuyuki Sakai ◽  
Kikuo Komori
Keyword(s):  
Ethylene Glycol ◽  
Catalytic Pyrolysis ◽  
Carbon Nanofiber ◽  
Direct Synthesis ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Ligand-Free and Recyclable Palladium(II) Acetate Catalyzes the Decarboxylative Cross-Coupling of Alkynyl Carboxylic Acids with Arylboronic Acids in Aqueous PEG-400

Synlett ◽  
2020 ◽  
Vol 31 (08) ◽  
pp. 793-796
Author(s):  
Bo-Xiao Tang ◽  
Hong Zou ◽  
Bao-Xing Xie ◽  
Hai-Qing Zhong ◽  
Yi-Hua Wang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Catalytic System ◽  
Reaction Medium ◽  
Cross Coupling ◽  
Poly Ethylene Glycol ◽  
Arylboronic Acids ◽  
Peg 400 ◽  
Ligand Free ◽  
Internal Alkynes ◽  
Poly Ethylene

A novel and ligand-free method was developed for the decarboxylative cross-coupling of alkynylcarboxylic acids with arylboronic acids. By using an environmentally friendly H2O–poly(ethylene glycol) (PEG-400) system as the reaction medium, a series of internal alkynes were synthesized in good yields and with remarkable selectivity. The Pd(OAc)2–H2O–PEG-400 catalytic system could be used for up to three cycles without any loss of activity, demonstrating the robustness of the approach.

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