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A New Straightforward Method for Lipophilicity logP Measurement using 19F NMR Spectroscopy
Published on: January 30, 2019
Detection and Identification of Alkenes and Alkynes Using a 19F-Labeled NMR Probe
Zixuan Ma1, Chenyang Wang1, Guangxing Gu1
1State Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.
Abstract:
We report a trifluoromethyl-labeled copper(I) complex probe that, in combination with 19F NMR spectroscopy, enables rapid and specific detection of alkene and alkyne compounds. The probe operates based on dynamic coordination interactions between the Cu(I) center and unsaturated hydrocarbons, converting recognition events into distinct 19F NMR signal changes, thereby allowing "separation-free" analysis without requiring complex sample pretreatment. Experimental results demonstrate that the probe can effectively discriminate between terminal and disubstituted alkynes, distinguish structurally similar compounds and regioisomers, and simultaneously identify multiple alkene and alkyne components in mixed samples, showing good anti-interference capability and potential for multiplexed analysis. This method offers a simple, sensitive, and reliable new strategy for the rapid identification and structural analysis of unsaturated compounds in complex matrices.
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