## Abstract A widely used herbicide, 2,2‐dichloropropionic acid (dalapon), was synthesized with ^14^C‐labeling in the C‐1 or C‐2 positions. The carboxyl labeled material was prepared in 55% yield by carbonation of 1,1‐dichloro‐ethyllithium at approximately −104°. Starting with trichloroacetic acid,
The synthesis of 14C-labeled chlorogenic acid
✍ Scribed by J. F. Debardeleben; L. C. Teng
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- French
- Weight
- 276 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
14C-labeled chlorogenic acid (specijic activity 30.6 nCilmg) was synthesized by reaction of diphenylmethyl-I-0-ethoxy-carbonyl- 4,5-0-isopropylidenequinate ( V ) with 0,O-dimethylcarbonyl caffeoyl chloride-u-14C (VIII) followed by selective hydrolysis of the protecting groups.
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