Sequential Ir/Cu-Mediated Method for the Meta-Selective C-H Radiofluorination of (Hetero)Arenes.
Sequential Ir/Cu-Mediated Method for the Meta-Selective C-H Radiofluorination of (Hetero)Arenes.
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(杂音)领域的元选择性C-H射荧光的顺序IR/CU介导的方法。
DOI:
10.1021/jacs.1c00523
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发表时间:
2021-05-12
影响因子:
15
通讯作者:
Scott PJH
中科院分区:
文献类型:
--
作者:
Wright JS;Sharninghausen LS;Preshlock S;Brooks AF;Sanford MS;Scott PJH
This Article describes a sequential Ir/Cu-mediated process for the meta-selective C─H radiofluorination of (hetero)arene substrates. In the first step, Ir-catalyzed C(sp2)─H borylation affords (hetero)aryl pinacolboronate (BPin) esters. The intermediate organoboronates are then directly subjected to copper-mediated radiofluorination with [18F]tetrabutylammonium fluoride to afford fluorine-18 labeled (hetero)arenes in high radiochemical yield and radiochemical purity. This entire process is performed on a bench-top without Schlenk or glovebox techniques and circumvents the need to isolate (hetero)aryl boronate esters. The reaction was automated on a TracerLab FXFN module with 1,3-dimethoxybenzene and a meta-tyrosine derivative. The products, [18F]1-fluoro-3,5-dimethoxybenzene and an 18F-labeled meta-tyrosine derivative, were obtained in 37 ± 5% isolated radiochemical yield and >99% radiochemical purity and 25% isolated radiochemical yield and 99% radiochemical purity, and 0.52 Ci/μmol (19.24 GBq/μmol) molar activity (Am), respectively. Authors are required to submit a graphic entry for the Table of Contents (TOC) that, in conjunction with the manuscript title, should give the reader a representative idea of one of the following: A key structure, reaction, equation, concept, or theorem, etc., that is discussed in the manuscript. Consult the journal’s Instructions for Authors for TOC graphic specifications.
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影响因子:
5.2
作者:
McCammant MS;Thompson S;Brooks AF;Krska SW;Scott PJH;Sanford MS
通讯作者:
Sanford MS
影响因子:
1.9
作者:
ARGENTINI, M;WIESE, C;WEINREICH, R
通讯作者:
WEINREICH, R
影响因子:
5.2
作者:
Ichiishi, Naoko;Brooks, Allen F.;Topczewski, Joseph J.;Rodnick, Melissa E.;Sanford, Melanie S.;Scott, Peter J. H.
通讯作者:
Scott, Peter J. H.
影响因子:
64.8
作者:
Neumann CN;Hooker JM;Ritter T
通讯作者:
Ritter T
影响因子:
8.4
作者:
Brooks AF;Topczewski JJ;Ichiishi N;Sanford MS;Scott PJ
通讯作者:
Scott PJ