A two-step s y n t h e s i s of t h r e e carbonate and f o u r carbamate esters l a b e l e d a t t h e carbonyl with c a r n-14 i s described. The method u t i l i z e s t h e r e a d i l y a v a i l a b l e [' %I -phosgene which i s f i r s t converted t o an i s o l a b l e [14C] -labeled a l k
Synthesis of carbon-14 labelled acetaminophen (4-hydroxyphenylacetamide, carbonyl-14C)
✍ Scribed by S. Stavchansky; P. Wu
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- French
- Weight
- 120 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A simple and convenient method for the condensation of paminophenol (I) with ^14^C‐acetic anhydride (II) yields up to 76% of ^14^C‐labelled 4‐hydroxyphenylacetamide (carbonyl‐^14^C) (III). Typical synthesis time is 60 minutes. Radioactive yield is 51%, and specific activity is 0.22 μCi/mg.
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