Abstract
The mechanochemical Knoevenagel condensation of three fluorinated benzaldehyde derivates and malononitrile was investigated. The reactions were performed under solvent- and catalyst-free conditions and resulted in highly crystalline products after crystallization from a viscous phase in the milling jar. The quality of the obtained crystals was sufficient for single-crystal X-ray diffraction circumventing a recrystallization step. To gain more information on the reaction, progress was investigated in situ using time-resolved Raman spectroscopy. The results show a direct conversion of the reactants.
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Haferkamp, S., Kraus, W. & Emmerling, F. Studies on the mechanochemical Knoevenagel condensation of fluorinated benzaldehyde derivates. J Mater Sci 53, 13713–13718 (2018). https://doi.org/10.1007/s10853-018-2492-0
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DOI: https://doi.org/10.1007/s10853-018-2492-0