## Abstract A semimicro synthesis was devised to prepare pure 1,2,6,7‐^14^C‐chelidonic acid of high specific activity from 1,2‐^14^C‐oxalic acid.
A simple synthesis of 2, 6-diaminopimelic-/ 1, 7- 14C/acid
✍ Scribed by A. Arendt; A. Kolodziejczyk
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- French
- Weight
- 152 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
A convenient method of synthesis of 2, 6‐diaminopinelic / 1, 7 ^14^C / acid / DAP / has been elaborated. Glutaric aldehyde and K^14^CN produced the dicyanhydrine which was converted without izolation into the dihydantoine derivative of DAP by treatment with NH~4~HCO~3~. Hydrolisis /H~2~So~4~ / and removal of sulphate ions gave the crystalline, chromatographically pure DAP /1, 7‐^14^C/ of spec. activity 4, 42 mCi / mole. The radichemical yield of the synthesis was 56%.
📜 SIMILAR VOLUMES
## Abstract D,L‐2,6‐Diaminopimelic‐(2‐^14^C) acid was prepared by alkylation of diethyl acetamidomalonate‐(2‐^14^C) with 5‐bromo‐N‐phthaloyl‐L‐norvaline methyl ester and hydrolysis of the condensation product. Depending on the alkylation conditions, partial or complete racemisation takes place and
## Abstract Propionic‐3‐^14^C acid was prepared by methylation of tricarbethoxymethane and subsequent hydrolysis. This method avoids the problems of malonic ester synthesis. A pure monoalkyl derivative was obtained.
## Abstract [2,6‐^14^C]‐2‐chloroisonicotinic acid (1) was prepared by kinetically controlled lithiation and carbonation of [2,6‐^14^C]‐2,6‐dichloropyridine, followed by reduction using hydrazine and potassium hydroxide. Copyright © 2001 John Wiley & Sons, Ltd.