- Multidonor ligands. 2. Room-temperature C(sp3)-H activation of 2-(alkylthio)pyridine by gold(III) complexes
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Na[AuCl4] reacts with [py{SCH2C(O)R}-2] (py-2 = 2-pyridyl) at room temperature to give cyclometalated alkylgold(III) complexes [AuCl2{py{SCHC(O)R}-2}] [R = Ph (1a), Me (1b), OMe (1b)], which in turn react with NaBr or with PR′3 in the presence of NaClO4 to give [AuBr2{py{SCHC(O)R}-2}] [R = Ph (2a), Me (2b)] or a mixture of SP4-3- and SP4-4-[AuCl-{py{SCHC(O)R}-2}(PPh3)]ClO4 [R = Ph (3a), Me (3b)]. This mixture of isomers converted to the isomer SP4-4 upon refluxing in chloroform. When the last reaction was made using P(C6H4OMe-4)3, the main products were [AuCl{P(C6H4OMe-4)3}] and [Hpy{SCH2C(O)Ph}-2]ClO4. The crystal structure of the latter has been determined.
- Vicente, José,Chicote, María Teresa,Lozano, María Isabel,Huertas, Sonia
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p. 753 - 757
(2008/10/08)
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