Solvent-Controlled Switching of Cycloisomerization to Transposition in the Ag/Cu-Promoted Reaction of Terminal α-Allenols

摘要

We report herein a study on the Ag/Cu-catalyzed reactivity of α-allenols. The focus was the development of new methodologies for cyclization and/or transposition of this moiety. By simple solvent switch, the divergent preparation of dihydrofurans and 3-halo-3-alkenals in a controlled manner has been reached.