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The synthesis of ferrocenyl esters has been achieved using the DCC/DMAP protocol in the ambient temperature ionic liquids 1-butyl-3-methylimidazonium tetrafluoroborate ([bmim][BF4]) and 1-butyl-3-methylimidazonium hexafluorophosphate ([bmim][PF6]). Yields are very high and efficient recycling of solvent was achieved.
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Imrie et al. (2002) studied this question.
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