期刊
APPLIED CATALYSIS A-GENERAL
卷 478, 期 -, 页码 275-282出版社
ELSEVIER
DOI: 10.1016/j.apcata.2014.04.014
关键词
Ruthenium porphyrin; Oxidation; Sulfide; lodobenzene diacetate; Visible light
资金
- NSF [CHE-1213971]
- WKU Office of Research [RCAP 12-8012]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1213971] Funding Source: National Science Foundation
Under visible light irradiation, the carbonyl ruthenium(II) porphyrin complexes efficiently catalyze the selective oxidation of sulfides to sulfoxides with iodobenzene diacetate [PhI(OAc)(2)] as the oxygen source. Various thioanisoles and allylic sulfides were oxidized to the corresponding sulfoxides without overoxidation to sulfones. The high selectivity of this unprecedented oxygen-transfer process is mechanistically rationalized by a low-reactivity ruthenium(IV)-oxo species which can be detected in the reaction of carbonyl ruthenium(II) porphyrin with iodobenzene diacetate. To the best of our knowledge, this is the first demonstration of a mild and high-yield method for the highly selective sulfoxidations by ruthenium porphyrins and PhI(OAc)(2). (C) 2014 Elsevier B.V. All rights reserved.
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