The reaction of 2-thienyl-lithium with perfluoroaliphatic acids and their NN-diethyl amides gives anomalous results; either a perfluoroacyl thiophen or a thiophen-carboxylic acid or carboxamide is obtained, depending on the size of the perfluoroalkyl group. Hexafluoro-1,3-di-(2-thenoyl)propane has been prepared from 2-thienyl-magnesium bromide and perfluoroglutaryl dichloride.
E. Jones and I. M. Moodie, J. Chem. Soc. C, 1968, 1195 DOI: 10.1039/J39680001195
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