## Abstract 3‐Methanesulfonyloxypropyl tertiary amines were observed to cyclize to form azetidinium methanesulfonate moieties. Heat‐induced cyclization of 3‐methanesulfonyloxypropyl amines was utilized for preparation of azetidinium methanesulfonates. The azetidinium methanesulfonates were found to
Radiosynthesis of 3-[18F]fluoropropyl and 4-[18F]fluorobenzyl triarylphosphonium ions
✍ Scribed by Hayden T. Ravert; Igal Madar; Robert F. Dannals
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- French
- Weight
- 98 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0022-2135
- DOI
- 10.1002/jlcr.835
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✦ Synopsis
Abstract
3‐[^18^F]Fluoropropyl‐, 4‐[^18^F]fluorobenzyl‐triphenylphosphonium and 4‐[^18^F]fluorobenzyltris‐4‐dimethylaminophenylphosphonium cations were synthesized in multi‐step reactions from no carrier added (nca) [^18^F]fluoride. The time for synthesis, purification, and formulation was 56, 82, and 79 min with an average radiochemical yield of 12, 6 and 15%, respectively (not corrected for decay). The average specific radioactivity for the three radiolabeled compounds was 14.9 GB q/µmole (403 mCi/µmole) at end of synthesis (EOS). Copyright © 2004 John Wiley & Sons, Ltd.
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