Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
On the Cleavage of Tertiary Amines with Ethyl Chloroformate
TADASHI KOMETANISHUNSAKU SHIOTANIKEMMOTSU MITSUHASHI
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1976 Volume 24 Issue 2 Pages 342-349

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Abstract
Forty-seven tert. amines were examined in order to observe the relative lability of the various N-substituents in respect to cleavage by ClCO2Et in refluxing benzene. The aromatic amines did not react with ClCO2Et, while aliphatic and alicyclic amines were cleaved to give carbamate (s) ; the tendency to cause R-N cleavage was : benzyl>allyl>methyl>ethyl>other alkyl groups. It was found that the reaction of a tert. amine with ClCO2Et is greatly influenced by the polarity of the solvent, reaction temperature and N-substituents.
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© The Pharmaceutical Society of Japan
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