A systematic study of the effect of the hard end-group composition on the microphase separation, thermal and mechanical properties of supramolecular polyurethanes
This paper reports a systematic study on a series of supramolecular polyurethanes that possess microphase separated morphologies which afford elastic materials at room temperature. Combinations of urea and/or urethane linkers in addition to a phenyl space
Merino, Daniel Hermida,Feula, Antonio,Melia, Kelly,Slark, Andrew T.,Giannakopoulos, Ioannis,Siviour, Clive R.,Buckley, C. Paul,Greenland, Barnaby W.,Liu, Dan,Gan, Yu,Harris, Peter J.,Chippindale, Ann M.,Hamley, Ian W.,Hayes, Wayne
Kinetics of acetonitrile-assisted oxidation of tertiary amines by hydrogen peroxide
The rate of oxidation of tertiary amines by aqueous hydrogen peroxide is increased in the presence of acetonitrile due to the formation of a reactive intermediate. The active oxidant, presumably peroxyacetimidic acid, was quantified by a photometric method. Activation parameters of the acetonitrile-assisted and non-assisted oxidations are given in the temperature range 20 to 40 °C. The increased rate of the assisted oxidation is explained by the low enthalpy of activation although the entropy of activation is more negative due to a highly ordered transition state.
Laus
p. 864 - 868
(2007/10/03)
SYNTHESIS OF A NUMBER OF DERIVATIVES OF ALKALOIDS AND OF NITROGEN-CONTAINING HETEROCYCLES AND THEIR ANTICHOLINESTERASE ACTIVITIES
N-Methyl- and N-phenylcarbamates based on a number of alkaloids and nitrogen-containing heterocycles have been synthesized, and they have proved to be weak irreversible inhibitors of acetylcholinesterase and butyrylcholinesterase.It has been shown that th
Dalimov, D. N.,Karimov, D. T.,Vaizburg, G. N.,Abduvakhabov, A. A.,Abdullaeva, L. K.,Kamaev, F. G.
p. 702 - 708
(2007/10/02)
Local anesthetics. I. Phenylurethanes of dialkylamino alcohols.
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BANDELIN,TUSCHHOFF
p. 202 - 204
(2007/11/02)
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