Synthesis and reactivity of the five-membered cycloaurated complexes of 2-phenylthiazole

Abstract 2-Phenylthiazole (Hphtz) reacted with H[AuCl 4 ]·4H 2 O to give the salt [H(Hphtz)][AuCl 4 ] ( 1 ), while the reaction of Hphtz with Na[AuCl 4 ]·2H 2 O or AuCl 3 ·4H 2 O afforded the adduct [AuCl 3 (Hphtz N )] ( 2 ). When the adduct 2 was heated in 1,2-dichloroethane in the presence of AgBF 4 , cycloauration took place to produce [AuCl 2 (phtz C 1 , N )] [phtz=2-(2-thiazolyl)phenyl] ( 3 ). The reactivity of 3 towards Tl(acac) and PPh 3 was investigated.