Synthesis and reactivity of the five-membered cycloaurated complexes of 2-phenylthiazole
摘要:
2-Phenylthiazole (Hphtz) reacted with H[AuCl4]. 4H(2)O to give the salt [H(Hphtz)][AuCl4] (1), while the reaction of Hphtz with Na[AuCl4]. 2H(2)O or AuCl3. 4H(2)O afforded the adduct [AuCl3(Hphtz-N)] (2). When the adduct 2 was heated in 1,2-dichloroethane in the presence of AgBF4, cycloauration took place to produce [AuCl2(phtz-C-1, N)] [phtz = 2-(2-thiazolyl)phenyl] (3). The reactivity of 3 towards Tl(acac) and PPh3 was investigated. (C) 2001 Elsevier Science B.V. All rights reserved.
Synthesis and reactivity of the five-membered cycloaurated complexes of 2-phenylthiazole
摘要:
2-Phenylthiazole (Hphtz) reacted with H[AuCl4]. 4H(2)O to give the salt [H(Hphtz)][AuCl4] (1), while the reaction of Hphtz with Na[AuCl4]. 2H(2)O or AuCl3. 4H(2)O afforded the adduct [AuCl3(Hphtz-N)] (2). When the adduct 2 was heated in 1,2-dichloroethane in the presence of AgBF4, cycloauration took place to produce [AuCl2(phtz-C-1, N)] [phtz = 2-(2-thiazolyl)phenyl] (3). The reactivity of 3 towards Tl(acac) and PPh3 was investigated. (C) 2001 Elsevier Science B.V. All rights reserved.
A catalytic method for the straightforward synthesis of cyclometalated (C^N)gold(III) complexes is reported via an unprecedented, redox-neutral Rh-to-AuIII transmetalation. A rate-determining transfer of the C ligand followed by the subsequent incorporation of the N donor delivers the monocyclometalated (C^N) gold(III) species.