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Tritium recoil labeling of phenylacetic acid

✍ Scribed by Mrs. Agnes Dubey; José Castrillón

Publisher
John Wiley and Sons
Year
1975
Tongue
French
Weight
318 KB
Volume
11
Category
Article
ISSN
0022-2135

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Phenylacetia acid has been labeled by means of the nuclear reaction ^6^Li(n,α)^3^H, both in mixture with Li~2~CO^3^ and as the lithium salt. The amount of Li~2~ CO^3^ was such as to keep the same weight ratio of lithium and phenylacetate ion as in the salt.

It was observed that intimate mixtures of phenylacetic acid and lithium carbonate react slowly indicating that previous studies on the irradiation of mixtures of organic acids with lithium carbonate have not been performed with well defined systems.

A considerably higher specific activity of the acid was found in the case of the irradiation of the lithium salt. A series of degradative reactions which insures a double determination for the activity at each molecular position was applied. In contradiction with previous results, it was observed that considerable labeling takes place at the α‐position; somewhat less for the salt. The overall picture is one of uniform labeling in both cases, in agreement with the lack of selectivity shown by hot atom reactions.

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