From SmOF to SmH0.78OF0.22: H/F Substitution in Oxide Fluorides as a Synthesis Route to Heteroanionic Compounds

2021 ◽  
Author(s):  
Nicolas Zapp ◽  
Henry E. Fischer ◽  
Holger Kohlmann
Keyword(s):  
Synthesis Route ◽  
Oxide Fluorides

New synthesis route for lead zirconate titanate powder

2016 ◽  
Vol 42 (6) ◽  
pp. 6782-6790 ◽  
Author(s):  
Linggen Kong ◽  
Inna Karatchevtseva ◽  
Rohan Holmes ◽  
Joel Davis ◽  
Yingjie Zhang ◽  
...  
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Synthesis Route ◽  
Zirconate Titanate ◽  
New Synthesis

scholarly journals The Synthesis of Poly(Vinyl Alcohol) Grafted with Fluorinated Protic Ionic Liquids Containing Sulfo Functional Groups

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4158
Author(s):  
Patrycja Glińska ◽  
Andrzej Wolan ◽  
Wojciech Kujawski ◽  
Edyta Rynkowska ◽  
Joanna Kujawa
Keyword(s):  
Ionic Liquids ◽  
Vinyl Alcohol ◽  
Proton Exchange ◽  
Polymer Materials ◽  
Polymerization Reaction ◽  
Poly Vinyl Alcohol ◽  
Hydroxyl Groups ◽  
Protic Ionic Liquids ◽  
Synthesis Route ◽  
Sulfo Groups

There has been an ongoing need to develop polymer materials with increased performance as proton exchange membranes (PEMs) for middle- and high-temperature fuel cells. Poly(vinyl alcohol) (PVA) is a highly hydrophilic and chemically stable polymer bearing hydroxyl groups, which can be further altered. Protic ionic liquids (proticILs) have been found to be an effective modifying polymer agent used as a proton carrier providing PEMs’ desirable proton conductivity at high temperatures and under anhydrous conditions. In this study, the novel synthesis route of PVA grafted with fluorinated protic ionic liquids bearing sulfo groups (–SO3H) was elaborated. The polymer functionalization with fluorinated proticILs was achieved by the following approaches: (i) the PVA acylation and subsequent reaction with fluorinated sultones and (ii) free-radical polymerization reaction of vinyl acetate derivatives modified with 1-methylimidazole and sultones. These modifications resulted in the PVA being chemically modified with ionic liquids of protic character. The successfully grafted PVA has been characterized using 1H, 19F, and 13C-NMR and FTIR-ATR. The presented synthesis route is a novel approach to PVA functionalization with imidazole-based fluorinated ionic liquids with sulfo groups.

Engineering the large pocket of an (S)-selective transaminase for asymmetric synthesis of (S)-1-amino-1-phenylpropane

2021 ◽  
Author(s):  
Youyu Xie ◽  
Feng Xu ◽  
Lin Yang ◽  
He Liu ◽  
Xiangyang Xu ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Environmentally Benign ◽  
Chiral Amine ◽  
Synthesis Route

Amine transaminases offer an environmentally benign chiral amine asymmetric synthesis route.

scholarly journals Multistep batch-flow hybrid synthesis of a terbinafine precursor

2021 ◽  
Author(s):  
Tamás Hergert ◽  
Béla Mátravölgyi ◽  
Róbert Örkényi ◽  
János Éles ◽  
Ferenc Faigl
Keyword(s):  
Methyl Ether ◽  
Lithium Salt ◽  
Scale Up ◽  
Hybrid Process ◽  
High Yield ◽  
Grignard Reaction ◽  
Efficient Synthesis ◽  
Synthetic Process ◽  
Synthesis Route ◽  
Selective Addition

AbstractA three-step batch-flow hybrid process has been developed for an expeditious synthesis of the enynol key intermediate of antifungal terbinafine. This procedure involves consecutive organometallic steps without the necessity of any in-line purification: after a metalation by n-butyllithium, a selective addition of the lithium salt was elaborated followed by a Grignard reaction resulting in a high yield of 6,6-dimethylhept-1-en-4-yn-3-ol. Moreover, as an alternative to tetrahydrofuran, cyclopentyl methyl ether was used as solvent implementing a safe, sustainable, yet selective synthetic process. Even on a laboratory-scale, the optimized batch-flow hybrid process had a theoretical throughput of 41 g/h. Furthermore, the newly developed process provides an efficient synthesis route to the key-intermediate, while making acrolein obsolete, minimizing side-products, and enabling safe and convenient scale-up.

scholarly journals On the origin of the spontaneous formation of nanocavities in hexagonal bronzes (W,V)O3

2014 ◽  
Vol 43 (39) ◽  
pp. 14644-14652 ◽  
Author(s):  
E. García-González ◽  
M. D. Soriano ◽  
E. Urones-Garrote ◽  
J. M. López Nieto
Keyword(s):  
Spontaneous Formation ◽  
Synthesis Route ◽  
Self Assembled

The synthesis route followed to prepare h-WO3 type oxides results in the production of nanostructured crystals by the spontaneous formation of self-assembled and regular nano-cavities on their surface.

New Synthesis Route of PbMo6S8 Superconducting Chevrel Phase from Ultrafine Precursor Mixtures: I. PbS, MoS2 AND Mo Powders

1998 ◽  
Vol 33 (2) ◽  
pp. 237-252 ◽  
Author(s):  
Sylvie Even-Boudjada ◽  
Laurence Burel ◽  
Roger Chevrel ◽  
Marcel Sergent
Keyword(s):  
Chevrel Phase ◽  
Synthesis Route ◽  
New Synthesis

Deoxygenation of oleic acid: Influence of the synthesis route of Pd/mesoporous carbon nanocatalysts onto their activity and selectivity

2015 ◽  
Vol 504 ◽  
pp. 81-91 ◽  
Author(s):  
A. Dragu ◽  
S. Kinayyigit ◽  
E.J. García-Suárez ◽  
M. Florea ◽  
E. Stepan ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Mesoporous Carbon ◽  
Synthesis Route
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