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  1. 1 Open Chemistry

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  1. 1 2011

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  1. 1 Bittner B.

  2. 1 Janus E.

  3. 1 Milchert E.

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N-hexylpyridinium bis(trifluoromethylsulfonyl)imide and Lewis acids - catalytic systems for Diels-Alder reaction

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Bittner B., Janus E., Milchert E.
Open Chemistry
|
2011
|
vol. 9
|
issue 1
192-198
EN
A comparative study of the Diels-Alder reactions between cyclopentadiene (1) and dienophiles (2 a–c) in N-hexylpyridinium bis(trifluoromethylsulfonyl)imide in a temperature range of 20–45°C is reported. The reaction rate constants and activation energies were calculated. Moreover, the catalytic systems based on N-hexylpyridinium bis(trifluoromethylsulfonyl)imide and Lewis acids were tested as a reaction media to perform the Diels-Alder reaction. Yb, Y, Mg, Zn triflates and chlorides (0.005 to 0.1 mmol) were used as catalysts. The recycling of catalytic system consisted of YCl3 and ionic liquid was performed. [...]
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