6887-83-8Relevant academic research and scientific papers
Ester cyclopropanecarboxylate solvent-free synthesis method
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Paragraph 0045; 0046, (2016/12/16)
The invention discloses an ester cyclopropanecarboxylate solvent-free synthesis method. According to the synthesis method, 4-halogenated butyric ester is used as raw materials; under the effects of ion liquid and inorganic strong alkali, a target product of the ester cyclopropanecarboxylate is obtained. The synthesis method provided by the invention has the advantages that the use of a solvent is not needed; only the ion liquid and the inorganic alkali need to be added; the ester cyclopropanecarboxylate is obtained through reaction after the stirring. The solvent is not needed in the whole reaction process; the problem of environment pollution risk caused by the use of the solvent is solved; the process belongs to a green and environment-friendly novel production process. The product and the ion liquid are filtered and are separated from inorganic salt produced through reaction and the alkali which is not completely reacted; the product is obtained through rectification. Liquid left after the rectification can be repeatedly used for the next batch of reaction; the three-waste discharge is reduced; meanwhile, the cost can be reduced; the goal of green manufacturing is achieved.
Mild, one-pot conversion of carboxylic acids into esters using phase transfer catalysis
Puntambekar, Hemalata M,Naik, D G,Kapadi, A H
, p. 793 - 794 (2007/10/02)
One-pot conversion of carboxylic acids into esters under the influence of phase transfer catalysis is reported.The method is shown to work satisfactorily for optically active acids having epimerisable α-hydrogen.
