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Published September 2020 | Version v1
Journal article Metadata-only

Synthesis of novel proline-based imidazolium ionic liquids

Creators

  • 1. Institute of Advanced Research. Department of Engineering and Physical Sciences (India)

Description

A series of eight novel proline functionalized dipeptide imidazolium ionic liquids (DPILs), i.e. Boc-[Pro-Pro-EMIM], Boc-[Pro-Val-EMIM], Boc-[Pro-Ala-EMIM], Boc-[Pro-Phe-EMIM] containing [Cl] and [NTf2] anions were synthesized via a facile reaction of 2-chloroethylamine with four different dipeptides (Boc-Pro-Pro-OH, Boc-Pro-Val-OH, Boc-Pro-Ala-OH, and Boc-Pro-Phe-OH) followed by reaction with 1-methylimidazole and subsequent anion exchange. The synthesized ILs revealed similar characteristics of a conventional imidazolium ILs. The synthesized ILs were investigated by 1H NMR, 13C NMR, FT-IR, mass spectroscopy, TGA, and DSC. TGA revealed an improved thermal stability for NTf2 over chloride ion. DSC revealed a melting temperature less than 100 °C. Graphic abstract:

Additional details

Identifiers

DOI
10.1007/s00706-020-02670-x;

Publishing Information

Journal Title
Monatshefte fuer Chemie
Journal Volume
151
Journal Issue
9
Journal Page Range
p. 1409-1417
ISSN
0026-9247
CODEN
MOCHAP

INIS

Country of Publication
Austria
Country of Input or Organization
Austria
INIS RN
54007672
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
ANIONS; CALORIMETRY; CARBON 13; CHLORINE IONS; FOURIER TRANSFORM SPECTROMETERS; HYDROGEN 1; INFRARED SPECTRA; ION EXCHANGE; MASS SPECTROSCOPY; MELTING POINTS; MOLTEN SALTS; NUCLEAR MAGNETIC RESONANCE; PROLINE; THERMAL GRAVIMETRIC ANALYSIS
Descriptors DEC
AMINES; AMINO ACIDS; AZOLES; CARBON ISOTOPES; CARBOXYLIC ACIDS; CHARGED PARTICLES; CHEMICAL ANALYSIS; EVEN-ODD NUCLEI; GRAVIMETRIC ANALYSIS; HETEROCYCLIC ACIDS; HETEROCYCLIC COMPOUNDS; HYDROGEN ISOTOPES; IONS; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; MEASURING INSTRUMENTS; NUCLEI; ODD-EVEN NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PHYSICAL PROPERTIES; PYRROLES; PYRROLIDINES; QUANTITATIVE CHEMICAL ANALYSIS; RESONANCE; SALTS; SPECTRA; SPECTROMETERS; SPECTROSCOPY; STABLE ISOTOPES; THERMAL ANALYSIS; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE

Optional Information

Copyright
Copyright (c) 2020 © Springer-Verlag GmbH Austria, part of Springer Nature 2020