Ru(ii)-catalyzed rearrangement of the allenic sulfide bearing propargyl moiety: efficient formation of benzene derivatives

Abstract

[RuCl₂(p-cymene)]₂ efficiently catalyzes the rearrangement of allenic sulfides bearing the propargyl moiety to afford 1,2,4-trisubstituted benzene derivatives. The alkyne-Ru(II) carbene [2 + 2] cycloaddition/ring opening process has been proposed in the reaction mechanism.