2,2,3,3,4,4,4-Heptafluorobutyl Acetate: Transesterification Reaction of 2,2,3,3,4,4,4-Heptafluoro-1-Butanol and Isopropyl Acetate—Side-Product Composition

As the object of investigation in the present study, reactive distillation based on the transesterification of isopropyl acetate (IPAc) and 2,2,3,3,4,4,4-heptafluorobutanol (HFBol) under acidic conditions is addressed. This process aims to obtain 2,2,3,3,4,4,4-heptafluorobutyl acetate (HFBAc), which...

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Main Authors: Andrei V. Polkovnichenko, Evgeniya I. Kovaleva, Nikita A. Selivanov, Tatiana D. Ksenofontova, Sergey Ya. Kvashnin, Egor V. Lupachev
Format: Article
Language:English
Published: MDPI AG 2024-09-01
Series:Engineering Proceedings
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Online Access:https://www.mdpi.com/2673-4591/67/1/40
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Summary:As the object of investigation in the present study, reactive distillation based on the transesterification of isopropyl acetate (IPAc) and 2,2,3,3,4,4,4-heptafluorobutanol (HFBol) under acidic conditions is addressed. This process aims to obtain 2,2,3,3,4,4,4-heptafluorobutyl acetate (HFBAc), which is used in the production of non-aqueous electrolytes, ethyllithium sulphate, charge retention medium, ultraviolet light-absorbing oligomers, etc. Through a combination of NMR spectroscopy and GC-MS, it was determined that during the process, the following were primarily formed in the system: target HFBAc and the by-product, isopropanol. The following side-products were identified: di-isopropyl ether, acetic acid, water, and 2,2,3,3,4,4,4-heptafluorobutyl isopropyl ether (HFB-IPEth). No bis(1H,1H-heptafluorobutyl) ether or acetic anhydride were identified in the system. For HFBol, HFBAc and HFB-IPEth the <sup>1</sup>H, <sup>19</sup>F and <sup>13</sup>C{<sup>19</sup>F}), <sup>19</sup>F-<sup>19</sup>F COSY NMR, and mass spectra were reported in this study.
ISSN:2673-4591