Novel Ruthenium‐ and Platinum‐Catalyzed Sequential Reactions: Synthesis of Tri‐ and Tetrasubstituted Furans and Pyrroles from Propargylic Alcohols and Ketones

Abstract

Two cats. in the same pot: The two catalysts [Cp*RuCl(μ2-SMe)2RuCp*Cl] (1) and PtCl2 (2) promote a sequence of catalytic cycles in the same medium. Tri- or tetrasubstituted furans or pyrroles are afforded in moderate to good yields with high regioselectivities from the catalyzed reactions of propargylic alcohols with ketones or with ketones and anilines, respectively (see scheme; cats.=catalysts).