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Synthesis of polychlorinated [14C]alkanes (PCA) of high specific activity

✍ Scribed by Ake Bergman; Irene Leonardsson; Carl Axel Wachtmeister

Book ID
119020896
Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
309 KB
Volume
10
Category
Article
ISSN
0045-6535

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Three major DDD isomers, O,P'-DDD, m,p'-DDD and p,p'-DDD, 14C-labelled in the para-chlorophenyl ring, have been synthesized. The DDD products were obtained in isotopic yields ranging fran 42% to 58% and were of high specific activities; 31 mCi/mmol (0,~'-DDD; m,p'-DDD) and 19,8 mCi/mmol (p,p'-DDD).

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## Abstract N,N‐[Methyl‐^14^C]‐Dimethylhydrazine hydrochloride () having a specific activity of 115 mCi/mmol, was synthesized in two steps. Dimethylation of acetophenone hydrazone with ^14^C‐methyl iodide (specific activity = 58 mCi/mmol) in the presence of potassium in liquid ammonia followed by a