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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Strahlenchemische Telomerisation von Äthylen mit Malonsäurediäthylester / Radiation Chemical Telomerization of Ethylene with Malonic Acid Diethylester

  • P. Kaefer , A. Saus and B. Dederichs

The radiation-initiated telomerization of diethyl malonate (1) and ethylene leads to the even-numbered n-alkylmalonic acid diethylesters and the even-numbered n-alkyl-n-butylmalonic acid diethylesters. The yields of the n-alkyl-n-butylmalonic acid diethylesters referring to the yields of n-alkylmalonic acid diethylesters are increased by elevating the temperature and by lowering the pressure. High temperatures and low pressures favour the formation of short-chained telomers. The product distribution is independent from the absorbed dose and the dose rate. The G-values are: G (ester) 55; G(—C2H4) 230, the activation energy is 12.5 KJ/mol, the chain-transfer constants are about 0.2, and the rearrangement constants are about 2.5.

Received: 1976-9-13
Published Online: 2014-6-2
Published in Print: 1977-1-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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