Published in
Elsevier, Catalysis Communications, (56), p. 68-71, 2014
DOI: 10.1016/j.catcom.2014.06.032
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A green and sustainable method for the oxidation of 1,3-dihydrobenzo[c]thiophenes to sulfones using metalloporphyrin complexes
Journal article published in 2014 by
Gustavo da Silva,
Sonia M. G. Pires,
Vera L. M. Silva,
Mario M. Q. Simoes 
,
M. Graca P. M. S. Neves,
Susana L. H. Rebelo ,
Artur M. S. Silva ,
Jose A. S. Cavaleiro
,
M. Graca P. M. S. Neves,
Susana L. H. Rebelo ,
Artur M. S. Silva ,
Jose A. S. Cavaleiro
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Abstract
Two efficient methods are reported for the oxidation of 1,3-dihydrobenzo[c]thiophenes to sulfones in good to high yields using H2O2 in the presence of catalytic amounts of porphyrin-based catalysts in ethanol or acetonitrile as solvents at room temperature. The presence of electron-donating or electron-withdrawing groups, in the benzene ring of 1,3-dihydrobenzo[c]thiophene, is well tolerated.