phosphine as the ligand to gold(I), the alpha-oxo gold carbenes generated in situ via gold-catalyzed intermolecular oxidation of terminal alkynes were effectively trapped by various allylic sulfides, resulting in the formation of alpha-aryl(alkyl)thio-gamma,delta-unsaturated ketones upon facile [2,3]sigmatropic rearrangements.
使用新的 P,S-双齿膦作为
金 (I) 的
配体,通过
金催化末端炔的分子间氧化原位生成的 α-氧代
金卡宾被各种烯丙基
硫化物有效捕获,从而形成 α -芳基(烷基)
硫代-γ,δ-不饱和酮,易于 [2,3] σ 重排。