Carbodiphosphorane mediated synthesis of a triflyloxyphosphonium dication and its reactivity towards nucleophiles† †Electronic supplementary information (ESI) available. CCDC 1517442–1517448, 1518258 and 1518259. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7cc00982h Click here for additional data file. Click here for additional data file.
نویسندگان
چکیده
A carbodiphosphorane ((Ph3P)2C) mediated synthesis of the first triflyloxyphosphonium dication (12+) bearing two electrophilic sites is presented. Depending on the nucleophile, 12+ reacts selectively either at the sulfur atom of the triflyloxy moiety or at the directly attached phosphorus atom. In substitution reactions at the phosphorus atom the triflyloxy moiety serves as a leaving group and enables the synthesis of rare examples of pseudo-halophosphonium dications.
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