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A correction was published on 19 November 2009, see Molecules 2009, 14(11), 4689.

Molecules 2009, 14(5), 1755-1761; doi:10.3390/molecules14051755
Article

The Reaction of Diethyl Bromomalonate with p-tert-Butylthia-calix[4]arene: An Approach to Asymmetrical Derivatives

Received: 7 April 2009 / Revised: 20 April 2009 / Accepted: 6 May 2009 / Published: 7 May 2009
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Abstract

New dissymmetric and asymmetric p-tert-butylthiacalix[4]arene derivatives were prepared as a result of the reaction of p-tert-butylthiacalix[4]arene with diethyl bromomalonate in the presence of different alkali metals (Cs, K and Na) in refluxing acetone for 7 days. The structures of the prepared compounds were investigated by IR, 1H-NMR and MALDI-TOF mass spectroscopy.
Keywords: Thiacalix[4]arene; asymmetry; diethyl bromomalonate Thiacalix[4]arene; asymmetry; diethyl bromomalonate
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Omran, O.A. The Reaction of Diethyl Bromomalonate with p-tert-Butylthia-calix[4]arene: An Approach to Asymmetrical Derivatives. Molecules 2009, 14, 1755-1761.

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