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Titania-catalyzed radiofluorination of tosylated precursors in highly aqueous medium

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.5b02659· OSTI ID:1345980
 [1];  [2];  [2];  [2];  [2]
  1. David Geffen School of Medicine at Univ. of California, Los Angeles, CA (United States); Office of Scientific and Technical Information (OSTI)
  2. David Geffen School of Medicine at Univ. of California, Los Angeles, CA (United States)
Nucleophilic radiofluorination is an efficient synthetic route to many positron-emission tomography (PET) probes, but removal of water to activate the cyclotron-produced [18F]fluoride has to be performed prior to reaction, which significantly increases overall radiolabeling time and causes radioactivity loss. In this paper, we demonstrate the possibility of 18F-radiofluorination in highly aqueous medium. The method utilizes titania nanoparticles, 1:1 (v/v) acetonitrile–thexyl alcohol solvent mixture, and tetra-n-butylammonium bicarbonate as a phase-transfer agent. Efficient radiolabeling is directly performed with aqueous [18F]fluoride without the need for a drying/azeotroping step to significantly reduce radiosynthesis time. High radiochemical purity of the target compound is also achieved. Finally, the substrate scope of the synthetic strategy is demonstrated with a range of aromatic, aliphatic, and cycloaliphatic tosylated precursors.
Research Organization:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Grant/Contract Number:
SC0001249
OSTI ID:
1345980
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 17 Vol. 137; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (58)

Titelbild: Umkodierung des genetischen Codes mit Selenocystein (Angew. Chem. 1/2014) journal December 2013
Chemistry with [18F]Fluoride Ion journal June 2008
Striatal and extrastriatal microPET imaging of D2/D3 dopamine receptors in rat brain with [18F]fallypride and [18F]desmethoxyfallypride journal March 2011
Multielement analysis of whole blood by high resolution inductively coupled plasma mass spectrometry journal June 1999
Water Adsorption on TiO2 journal February 2010
Fluorinated benzamide neuroleptics—III. Development of (S)-N-[(1-allyl-2-pyrrolidinyl)methyl]-5-(3-[18F]fluoropropyl)-2,3-dimethoxybenzamide as an improved dopamine D-2 receptor tracer journal April 1995
The structure of a DMSO–water mixture from Car–Parrinello simulations journal October 2002
The Hallmarks of Cancer journal January 2000
The surface science of titanium dioxide journal January 2003
The adsorption and reaction of alcohols on TiO2 and Pd/TiO2 catalysts journal March 2013
Highly efficient production of [18F]fallypride using small amounts of base concentration journal December 2010
Combined experimental and theoretical investigation of interactions between kaolinite inner surface and intercalated dimethyl sulfoxide journal March 2015
Effects of clustering structure on volumetric properties of amino acids in (DMSO+water) mixtures journal June 2012
Polymer-immobilized fluorinase: Recyclable catalyst for fluorination reactions journal August 2013
Enzymatic radiofluorination: Fluorinase accepts methylaza-analog of SAM as substrate for FDA synthesis journal December 2013
Quantification of dopamine D2/3 receptors in rat brain using factor analysis corrected [18F]Fallypride images journal September 2012
Enhanced radiosyntheses of [11C]raclopride and [11C]DASB using ethanolic loop chemistry journal January 2013
Kit-like 18F-labeling of RGD-19F-Arytrifluroborate in high yield and at extraordinarily high specific activity with preliminary in vivo tumor imaging journal August 2013
D2/D3 dopamine receptor binding with [F-18]fallypride in thalamus and cortex of patients with schizophrenia journal July 2006
Adsorption of water and ammonia on TiO2-anatase cluster models journal June 2006
Review of recent advances in nucleophilic C–F bond-forming reactions at sp3 centers journal July 2014
The Secret of Dimethyl Sulfoxide−Water Mixtures. A Quantum Chemical Study of 1DMSO− n Water Clusters journal May 2002
Adsorption of Water on Reconstructed Rutile TiO 2 (011)-(2×1):  TiO Double Bonds and Surface Reactivity journal July 2005
Late Stage Benzylic C–H Fluorination with [ 18 F]Fluoride for PET Imaging journal May 2014
Facile S N 2 Reaction in Protic Solvent:  Quantum Chemical Analysis journal October 2007
Comparing Surface Binding of the Maleic Anhydride Anchor Group on Single Crystalline Anatase TiO 2 (101), (100), and (001) Surfaces journal August 2010
Review on Modified TiO 2 Photocatalysis under UV/Visible Light: Selected Results and Related Mechanisms on Interfacial Charge Carrier Transfer Dynamics journal November 2011
Photocatalytic Transformation of Organic Compounds in the Presence of Inorganic Ions. 2. Competitive Reactions of Phenol and Alcohols on a Titanium Dioxide−Fluoride System journal November 2000
Single Kaolinite Nanometer Layers Prepared by an In Situ Polymerization–Exfoliation Process in the Presence of Ionic Liquids journal December 2011
Effect of Fluorination on the Surface Properties of Titania P25 Powder: An FTIR Study journal October 2009
Photocatalytic Transformation of Organic Compounds in the Presence of Inorganic Anions. 1. Hydroxyl-Mediated and Direct Electron-Transfer Reactions of Phenol on a Titanium Dioxide−Fluoride System journal March 2000
Engineering Fluorometabolite Production: Fluorinase Expression in Salinispora tropica Yields Fluorosalinosporamide journal March 2010
Copper-Catalyzed [ 18 F]Fluorination of (Mesityl)(aryl)iodonium Salts journal June 2014
Fluorination of Boronic Acids Mediated by Silver(I) Triflate journal June 2009
High-Affinity Dopamine D 2 /D 3 PET Radioligands 18 F-Fallypride and 11 C-FLB457: A Comparison of Kinetics in Extrastriatal Regions Using a Multiple-Injection Protocol journal December 2009
An enzymatic route to 5-deoxy-5-[18F]fluoro-d-ribose, a [ 18 F]-fluorinated sugar for PET imaging journal January 2010
Batch-reactor microfluidic device: first human use of a microfluidically produced PET radiotracer journal January 2013
High yield and high specific activity synthesis of [ 18 F]fallypride in a batch microfluidic reactor for micro-PET imaging journal January 2014
Late-stage [ 18 F]fluorination: new solutions to old problems journal January 2014
High surface area crystalline titanium dioxide: potential and limits in electrochemical energy storage and catalysis journal January 2012
Radiofluorination of diaryliodonium tosylates under aqueous–organic and cryptand-free conditions journal January 2013
Multilayer water adsorption on rutile TiO2(110): A first-principles study journal March 2003
Micro-chemical synthesis of molecular probes on an electronic microfluidic device journal December 2011
Levels of systemic metal ions in patients with intramedullary nails journal January 2008
A Fluoride-Derived Electrophilic Late-Stage Fluorination Reagent for PET Imaging journal November 2011
The development of whole blood titanium levels after instrumented spinal fusion – Is there a correlation between the number of fused segments and titanium levels? journal August 2012
Radiofluorination using aluminum-fluoride (Al18F) journal January 2013
Positron Annihilation in and Adiabatic Compressibility of Water-Organic Solutions. The System Water-Dimethylsulfoxide journal April 1991
Application of Palladium-Mediated 18F-Fluorination to PET Radiotracer Development: Overcoming Hurdles to Translation journal March 2013
Recent Developments and Trends in 18F-Radiochemistry: Syntheses and Applications journal November 2007
Editorial (Letter from the Editor-in-Chief of Current Radiopharmaceuticals) journal January 2009
Fully Automated Production of Diverse 18F-Labeled PET Tracers on the ELIXYS Multireactor Radiosynthesizer Without Hardware Modification journal July 2014
Design and Optimization of Coin-Shaped Microreactor Chips for PET Radiopharmaceutical Synthesis journal February 2010
Validation of the Octamouse for Simultaneous 18 F-Fallypride Small-Animal PET Recordings from 8 Mice journal September 2010
Efficient Radiosynthesis of 3′-Deoxy-3′- 18 F-Fluorothymidine Using Electrowetting-on-Dielectric Digital Microfluidic Chip journal December 2013
A Review on Adsorption of Fluoride from Aqueous Solution journal September 2014
Self-assembled monolayers and titanium dioxide: From surface patterning to potential applications journal January 2011
Fast and Easy Drying Method for the Preparation of Activated [ 18 F]Fluoride Using Polymer Cartridge journal January 2011

Cited By (11)

Development of Customized [18F]Fluoride Elution Techniques for the Enhancement of Copper-Mediated Late-Stage Radiofluorination journal March 2017
Chemie der Positronenemissionstomographie: Aktuelle Fortschritte bei 11 C‐, 18 F‐, 13 N‐ und 15 O‐Markierungsreaktionen journal January 2019
Chemistry for Positron Emission Tomography: Recent Advances in 11 C-, 18 F-, 13 N-, and 15 O-Labeling Reactions journal January 2019
Catalyst-Controlled Selectivity in the Synthesis of C2- and C3-Sulfonate Esters from Quinoline N -Oxides and Aryl Sulfonyl Chlorides journal July 2016
An azeotropic drying-free approach for copper-mediated radiofluorination without addition of base journal February 2019
Acidic Handle Assemble Heterogeneous Carbocatalyst for Facile Aliphatic Nucleophilic Fluorination journal September 2019
Fluorine-18 labelled building blocks for PET tracer synthesis journal January 2017
The recent development of efficient Earth-abundant transition-metal nanocatalysts journal January 2017
Recent progress on fluorination in aqueous media journal January 2017
Performing multi-step chemical reactions in microliter-sized droplets by leveraging a simple passive transport mechanism journal January 2017
Fast and reliable generation of [ 18 F]triflyl fluoride, a gaseous [ 18 F]fluoride source journal January 2018

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