JOURNAL OF CHEMICAL RESEARCH 2014 185
Received 8 January; accepted 29 January 2014
Paper 1402389 doi: 10.3184/174751914X13923144871332
Published online: 7 March 2014
Experimental
All reagents were obtained from local commercial suppliers and used
without further purification. Melting points were determined with
a WRS-1B apparatus and were uncorrected. 1H and 13C NMR spectra
were recorded on a Bruker Advance 400 spectrometer. All the products
are known compounds and were identified by comparing their physical
and spectra data with those reported in the literature.28–30
References
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Synthesis of DES: ChCl/p-TsOH
The DES ChCl/p-TsOH was readily prepared according to the
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Selective oxidation of sulfide 1a and the recovery of DES; typical
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A mixture of benzyl phenyl sulfide (0.2 g, 1 mmol), 30% H2O2
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petroleum ether/EtOAc as eluent, providing the sulfoxide 2a in 95%
yield. The DES was then readily recovered via evaporation under
vacuum at 80 °C and reused for the next cycle. All the products are
known compounds and fully characterised.
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Gram-scale synthesis of 2a
A reaction flask was charged with benzyl phenyl sulfide (4.0 g,
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described above.
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This project was financially supported by the National Natural
Science Foundation of China (NO. 21302014), the Natural Science
Foundation for Colleges and Universities of Jiangsu Province
(13KJB150002), and the Jiangsu Key Laboratory of Advanced
Catalytic Materials and Technology (grant no. BM2012110).
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