@phdthesis{Kirchhecker2014,
  author    = {Kirchhecker, Sarah},
  title     = {Renewable imidazolium zwitterions as platform molecules for the synthesis of ionic liquids and materials},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-77412},
  school      = {Universit{\"a}t Potsdam},
  pages     = {136},
  year      = {2014},
  abstract  = {Following the principles of green chemistry, a simple and efficient synthesis of functionalised imidazolium zwitterionic compounds from renewable resources was developed based on a modified one-pot Debus-Radziszewski reaction. The combination of different carbohydrate-derived 1,2-dicarbonyl compounds and amino acids is a simple way to modulate the properties and introduce different functionalities. A representative compound was assessed as an acid catalyst, and converted into acidic ionic liquids by reaction with several strong acids. The reactivity of the double carboxylic functionality was explored by esterification with long and short chain alcohols, as well as functionalised amines, which led to the straightforward formation of surfactant-like molecules or bifunctional esters and amides. One of these di-esters is currently being investigated for the synthesis of poly(ionic liquids). The functionalisation of cellulose with one of the bifunctional esters was investigated and preliminary tests employing it for the functionalisation of filter papers were carried out successfully. The imidazolium zwitterions were converted into ionic liquids via hydrothermal decarboxylation in flow, a benign and scalable technique. This method provides access to imidazolium ionic liquids via a simple and sustainable methodology, whilst completely avoiding contamination with halide salts. Different ionic liquids can be generated depending on the functionality contained in the ImZw precursor. Two alanine-derived ionic liquids were assessed for their physicochemical properties and applications as solvents for the dissolution of cellulose and the Heck coupling.},
  language  = {en}
}
@article{KirchheckerTroegerMuellerBakeetal.2015,
  author    = {Kirchhecker, Sarah and Tr{\"o}ger-M{\"u}ller, Steffen and Bake, Sebastian and Antonietti, Markus and Taubert, Andreas and Esposito, Davido},
  title     = {Renewable pyridinium ionic liquids from the continuous hydrothermal decarboxylation of furfural-amino acid derived pyridinium zwitterions},
  series = {Green chemistry},
  volume    = {8},
  journal   = {Green chemistry},
  number    = {17},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {1463-9262},
  doi       = {10.1039/c5gc00913h},
  pages     = {4151 -- 4156},
  year      = {2015},
  abstract  = {Fully renewable pyridinium ionic liquids were synthesised via the hydrothermal decarboxylation of pyridinium zwitterions derived from furfural and amino acids in flow. The functionality of the resulting ionic liquid (IL) can be tuned by choice of different amino acids as well as different natural carboxylic acids as the counterions. A representative member of this new class of ionic liquids was successfully used for the synthesis of ionogels and as a solvent for the Heck coupling.},
  language  = {en}
}
@article{KirchheckerTroegerMuellerBakeetal.2015,
  author    = {Kirchhecker, Sarah and Tr{\"o}ger-M{\"u}ller, Steffen and Bake, Sebastian and Antonietti, Markus and Taubert, Andreas and Esposito, Davide},
  title     = {Renewable pyridinium ionic liquids from the continuous hydrothermal decarboxylation of furfural-amino acid derived pyridinium zwitterions},
  series = {Green chemistry : an international journal and green chemistry resource},
  volume    = {17},
  journal   = {Green chemistry : an international journal and green chemistry resource},
  number    = {8},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {1463-9262},
  doi       = {10.1039/c5gc00913h},
  pages     = {4151 -- 4156},
  year      = {2015},
  abstract  = {Fully renewable pyridinium ionic liquids were synthesised via the hydrothermal decarboxylation of pyridinium zwitterions derived from furfural and amino acids in flow. The functionality of the resulting ionic liquid (IL) can be tuned by choice of different amino acids as well as different natural carboxylic acids as the counter-ions. A representative member of this new class of ionic liquids was successfully used for the synthesis of ionogels and as a solvent for the Heck coupling.},
  language  = {en}
}
@misc{KirchheckerTroegerMuellerBakeetal.2015,
  author    = {Kirchhecker, Sarah and Tr{\"o}ger-M{\"u}ller, Steffen and Bake, Sebastian and Antonietti, Markus and Taubert, Andreas and Esposito, Davido},
  title     = {Renewable pyridinium ionic liquids from the continuous hydrothermal decarboxylation of furfural-amino acid derived pyridinium zwitterions},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-81390},
  year      = {2015},
  abstract  = {Fully renewable pyridinium ionic liquids were synthesised via the hydrothermal decarboxylation of pyridinium zwitterions derived from furfural and amino acids in flow. The functionality of the resulting ionic liquid (IL) can be tuned by choice of different amino acids as well as different natural carboxylic acids as the counterions. A representative member of this new class of ionic liquids was successfully used for the synthesis of ionogels and as a solvent for the Heck coupling.},
  language  = {en}
}