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Volumn 18, Issue 10, 2012, Pages 2987-2997

Mechanistic studies on a sulfoxide transfer reaction mediated by diphenyl sulfoxide/triflic anhydride

Author keywords

cations; oxidation; reaction mechanisms; sulfoxides; trifluoromethanesulfonic anhydride

Indexed keywords

ACTIVATING AGENTS; ANHYDROUS CONDITIONS; CHEMICAL TRANSFORMATIONS; CHIRAL AUXILIARIES; DICATIONS; DIFFERENT PROCESS; DIPHENYL SULFOXIDES; GLYCALS; GLYCOSYL DONORS; GLYCOSYLATION REACTIONS; HEMIACETALS; INTERCONVERSIONS; ISOTOPIC LABELLING; LEAVING GROUPS; MECHANISTIC STUDIES; NOVEL STRATEGIES; ORGANIC SYNTHESIS; OXIDATION REACTIONS; OXYGEN ATOM; OXYGEN EXCHANGE; REACTION MECHANISM; REVERSIBLE REACTION; STEREO-SELECTIVE; STEREOSELECTIVE SYNTHESIS; SULFOXIDES; THERMODYNAMIC CONTROL; THIOGLYCOSIDES; TRANSFER REACTION; TRIFLUOROMETHANESULFONIC ANHYDRIDE;

EID: 84857575303     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.201102861     Document Type: Article
Times cited : (29)

References (87)
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    • 2O, even at room temperature, see Ref. [3]. Therefore, it must be an activated diphenyl sulfoxide species that reacts with diphenyl sulfide to produce sulfonium ion 13.
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    • For a mechanism for self-immolative reduction of sulfoxides by triflic anhydride in the absence of competing nucleophiles, see:, In principle this process could provide a fifth possible mechanism for the oxidation reaction reported here. The mechanism would start with attack of diphenyl sulfoxide on an electrophilic oxygen in activated sulfoxide 6 to generate a peroxysulfonium ion and diphenyl sulfide 24. These species would react together to form sulfonium ion 13 and peroxytriflic acid which could then oxidise oxathiane 34 to sulfoxide 37. However, we would consider this route very unlikely as the self-immolative reduction reaction is very slow taking days to reach completion and would thus not be competitive with the very rapid reaction that we observe between a sulfide and activated sulfoxide.
    • For a mechanism for self-immolative reduction of sulfoxides by triflic anhydride in the absence of competing nucleophiles, see:, Y. Macé, J.-C. Blazejewski, C. Pradet and E. Magnier, Eur. J. Org. Chem. 2010, 2010, 5772-5776. In principle this process could provide a fifth possible mechanism for the oxidation reaction reported here. The mechanism would start with attack of diphenyl sulfoxide on an electrophilic oxygen in activated sulfoxide 6 to generate a peroxysulfonium ion and diphenyl sulfide 24. These species would react together to form sulfonium ion 13 and peroxytriflic acid which could then oxidise oxathiane 34 to sulfoxide 37. However, we would consider this route very unlikely as the self-immolative reduction reaction is very slow taking days to reach completion and would thus not be competitive with the very rapid reaction that we observe between a sulfide and activated sulfoxide.
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    • MacÉ, Y.1    Blazejewski, J.-C.2    Magnier, C.P.A.E.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.