A Highly Regioselective Synthesis of Polysubstituted Naphthalene Derivatives through Gallium Trichloride Catalyzed Alkyne–Aldehyde Coupling This work has been partially supported by the US NSF CAREER Award program and the US NSF-EPA STAR program.
作者:Ganapathy S. Viswanathan、Mingwen Wang、Chao-Jun Li
AbstractThe selective activation/functionalization of benzhydryl C(sp3)H bonds is documented. The gold complex XPhosAuNTf2 turned out to be an efficient catalyst (5 mol%) to transform readily available propargylic esters into di‐ or trisubstituted naphthalenes in high yield. A 1,5‐hydride shift is postulated as the key step of the cascade reaction sequence.magnified image