Dataset Information
Fast and efficient copper-mediated 18F-fluorination of arylstannanes, aryl boronic acids, and aryl boronic esters without azeotropic drying.
Ontology highlight
ABSTRACT: Background
Copper-mediated radiofluorination is a straightforward method to produce a variety of [18F]fluoroarenes and [18F]fluoroheteroarenes. To minimize the number of steps in the production of 18F-labelled radiopharmaceuticals, we have developed a short and efficient azeotropic drying-free 18F-labelling method using copper-mediated fluorination. Our goal was to improve the copper-mediated method to achieve wide substrate scope with good radiochemical yields with short synthesis time.Results
Solid phase extraction with Cu (OTf)2 in dimethylacetamide is a suitable activation method for [18F]fluoride. Elution efficiency with Cu (OTf)2 is up to 79% and radiochemical yield (RCY) of a variety of model molecules in the crude reaction mixture has reached over 90%. Clinically relevant molecules, norepinephrine transporter tracer [18F]NS12137 and monoamine transporter tracer [18F]CFT were produced with 16.5% RCY in 98?min and 5.3% RCY in 64?min, respectively.Conclusions
Cu (OTf)2 is a suitable elution agent for releasing [18F]fluoride from an anion exchange cartridge. The method is fast and efficient and the Cu-complex is customizable after the release of [18F]fluoride. Alterations in the [18F]fluoride elution techniques did not have a negative effect on the subsequent labelling reactions. We anticipate this improved [18F]fluoride elution technique to supplant the traditional azeotropic drying of [18F]fluoride in the long run and to concurrently enable the variations of the copper-complex.
SUBMITTER: Lahdenpohja SO
PROVIDER: S-EPMC6795642 | biostudies-literature | 2019 Oct
REPOSITORIES: biostudies-literature
Publications
Fast and efficient copper-mediated <sup>18</sup>F-fluorination of arylstannanes, aryl boronic acids, and aryl boronic esters without azeotropic drying.
EJNMMI radiopharmacy and chemistry 20191016 1
<h4>Background</h4>Copper-mediated radiofluorination is a straightforward method to produce a variety of [<sup>18</sup>F]fluoroarenes and [<sup>18</sup>F]fluoroheteroarenes. To minimize the number of steps in the production of <sup>18</sup>F-labelled radiopharmaceuticals, we have developed a short and efficient azeotropic drying-free <sup>18</sup>F-labelling method using copper-mediated fluorination. Our goal was to improve the copper-mediated method to achieve wide substrate scope with good rad ...[more]