Pt(II)-catalyzed hydroarylation reaction of alkynes with pyrroles and furans

A Pt(II) catalyst showed a drastic effect on hydroarylation of alkynes with pyrroles and furans compared with Pd(OAc)2 catalyst. The hydroarylation reactions proceeded smoothly under mild conditions to give double-hydroarylation products in good yields. Mono-adducts were formed only when the second hydroarylation was inhibited by steric hindrance of substrates or low reactivity of the mono-adducts.

Hydroarylation of alkynes with pyrroles and furans using a Pt(II) catalyst proceeded smoothly under mild conditions to give double- or mono-adducts in good yields, being affected by steric hindrance of substrates.