## Abstract A convenient synthesis of [1‐^14^C]acetylcholine iodide in two steps is described. β‐Dimethylaminoethanol is acetylated with [1‐^14^C]acetic anhydride and the ester β‐dimethylaminoethyl [1‐^14^C]acetate quaternised with methyl iodide to afford [1‐^14^C]acetylcholine iodide in an overall
Convenient synthesis of D-threo-[dichloroacetyl 1–14C] chloramphenicol
✍ Scribed by C. V. Sontakke; S. P. Patil; V. K. P. Unny; N. Sivaprasad
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- French
- Weight
- 123 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0022-2135
- DOI
- 10.1002/jlcr.932
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✦ Synopsis
Abstract
A convenient synthesis of chloramphenicol labelled with carbon‐14 in the dichloroacetyl group at the 1 position is described. It was prepared as part of a 4‐step sequence from [1**‐^14^C] glycine and the product was purified by preparative HPLC. A radiochemical yield of 47% was obtained based on [1‐**^14^C] glycine and the product had a specific activity of 0.47 mCi/mmol. The procedure can be employed for the synthesis of high specific activity [^14^C] chloramphenicol, labelled at 1, 2 or both the positions of dichloroacetyl group. Copyright © 2005 John Wiley & Sons, Ltd.
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