Oxidation of Primary Aromatic Amines under Irradiation with Ultrasound and/or Microwaves |
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| Authors: | Zhilin Wu Giancarlo Cravotto Davide Garella Jila Asgari |
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| Institution: | 1. Institute of Technical Chemistry and Environmental Chemistry, Friedrich–Schiller University , Jena, Germany;2. Department of Science and Technology of Pharmacy , University of Turin , Italy;3. Institute of Technical Chemistry and Environmental Chemistry, Friedrich–Schiller University , Jena, Germany;4. Department of Chemistry, Science Faculty , Gorgan University of Agricultural Science and Natural Resources , Gorgan, Iran |
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| Abstract: | The oxidation of primary aromatic amines, p-methylaniline, p-ethylaniline and p-chloroaniline to the corresponding azo- and azoxy-compounds has been observed in ultrasound and/or microwaves systems. The individual irradiation of microwaves and its simultaneous irradiation with ultrasound obviously elevate the conversion of amines, as compared with the individual irradiation of ultrasound and the heating in a plain water bath. However, the formation of formamidine resulted in poor selectivity toward azo and azoxy products in the presence of dimethylformamide (DMF). |
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| Keywords: | bis(Substituted benzylidene) cycloalkanone Claisen-Schmidt condensation Ultrasound Supported catalyst |
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