scholarly journals Halogen-free synthesis of symmetrical 1,3-dialkylimidazolium ionic liquids using non-enolisable starting materials

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 8848-8859 ◽  
Author(s):  
Daphne Depuydt ◽  
Arne Van den Bossche ◽  
Wim Dehaen ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquids ◽  
Building Blocks ◽  
Metathesis Reaction ◽  
Halogen Free

Halogen-free-synthesis of symmetrical 1,3-dialkylimidazolium ionic liquids starting from their building blocks followed by metathesis reaction towards desired anions.

Synthesis and Characterization of Novel Ester Functionalized Chiral Ionic Liquids

2011 ◽  
Vol 197-198 ◽  
pp. 471-477
Author(s):  
Hong Li Wang ◽  
Xiao Ling Hu ◽  
Ping Guan ◽  
Jin Yang Yu ◽  
Yi Mei Tang
Keyword(s):  
Ionic Liquids ◽  
Quantum Chemical ◽  
Chemical Structure ◽  
Structure Optimization ◽  
Building Blocks ◽  
Optimization Method ◽  
Metathesis Reaction ◽  
Chiral Ionic Liquids ◽  
Methyl Imidazole

Three different chiral ionic liquids, chloride (R)-(+)-β-(1-methyl-imidazole)–propio-nate, (R)-(+)-β-(1-methyl-imidazole)-propionate terafluoroborate and hexafluorophosphate, weresuccessfully synthesized via the nucleophilic substitution reaction and the anion metathesis reaction, with (S)-(-)-2-chloro-propionic acid as the chiral source. Structures of the chiral io-nic liquids have been characterized by the infrared spectroscopy, nuclear magnetic resonancespectroscopy and quantum chemical structure optimization method. These new ionic materia-ls can be used as building blocks for the synthesis of ionic liquids.

Superhalogens as Building Blocks of Ionic Liquids

2021 ◽  
Vol 125 (10) ◽  
pp. 2146-2153
Author(s):  
Ambrish Kumar Srivastava ◽  
Abhishek Kumar ◽  
Neeraj Misra
Keyword(s):  
Ionic Liquids ◽  
Building Blocks

scholarly journals Synthesis of fluorinated δ-lactams via cycloisomerization of gem-difluoropropargyl amides

2010 ◽  
Vol 6 ◽  
Author(s):  
Satoru Arimitsu ◽  
Gerald B Hammond
Keyword(s):  
Building Blocks ◽  
Alder Reaction ◽  
Diels Alder ◽  
Tandem Reaction ◽  
Enyne Metathesis ◽  
Metathesis Reaction ◽  
Ring Closing Metathesis ◽  
Diels Alder Reaction

gem-Difluoro-1,7-enyne amides are suitable building blocks for the synthesis of difluorodihydropyridinones via a ring-closing metathesis reaction, and of 4,4-difluoro-3-oxoisoquinolines through a ring-closing metathesis–enyne metathesis tandem reaction. These products, in turn, undergo a Diels–Alder reaction to yield heterotricyclic systems in moderate to good yields.

Novel halogen-free chelated orthoborate–phosphonium ionic liquids: synthesis and tribophysical properties

2011 ◽  
Vol 13 (28) ◽  
pp. 12865 ◽  
Author(s):  
Faiz Ullah Shah ◽  
Sergei Glavatskih ◽  
Douglas R. MacFarlane ◽  
Anthony Somers ◽  
Maria Forsyth ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Halogen Free ◽  
Phosphonium Ionic Liquids

scholarly journals Self-Extinguishing Resin Transfer Molding Composites Using Non-Fire-Retardant Epoxy Resin

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2554 ◽  
Author(s):  
Zhi Geng ◽  
Shuaishuai Yang ◽  
Lianwang Zhang ◽  
Zhenzhen Huang ◽  
Qichao Pan ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardants ◽  
Resin Transfer Molding ◽  
Fire Retardant ◽  
Functional Materials ◽  
Building Blocks ◽  
Fire Retardancy ◽  
Limiting Oxygen Index ◽  
Transfer Molding ◽  
Halogen Free

Introducing fire-retardant additives or building blocks into resins is a widely adopted method used for improving the fire retardancy of epoxy composites. However, the increase in viscosity and the presence of insoluble additives accompanied by resin modification remain challenges for resin transfer molding (RTM) processing. We developed a robust approach for fabricating self-extinguishing RTM composites using unmodified and flammable resins. To avoid the effects on resin fluidity and processing, we loaded the flame retardant into tackifiers instead of resins. We found that the halogen-free flame retardant, a microencapsulated red phosphorus (MRP) additive, was enriched on fabric surfaces, which endowed the composites with excellent fire retardancy. The composites showed a 79.2% increase in the limiting oxygen index, a 29.2% reduction in heat release during combustion, and could self-extinguish within two seconds after ignition. Almost no effect on the mechanical properties was observed. This approach is simple, inexpensive, and basically applicable to all resins for fabricating RTM composites. This approach adapts insoluble flame retardants to RTM processing. We envision that this approach could be extended to load other functions (radar absorbing, conductivity, etc.) into RTM composites, broadening the application of RTM processing in the field of advanced functional materials.

Imidazolium dialkylphosphates—a class of versatile, halogen-free and hydrolytically stable ionic liquids

2007 ◽  
Vol 9 (3) ◽  
pp. 233-242 ◽  
Author(s):  
Esther Kuhlmann ◽  
Simone Himmler ◽  
Heidi Giebelhaus ◽  
Peter Wasserscheid
Keyword(s):  
Ionic Liquids ◽  
Halogen Free
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