ChemInform Abstract: Convergent Synthesis of 2H‐Chromenes — A Formal [3 + 3] Cycloaddition by a One‐Pot, Three‐Step Cascade.

Abstract

Convergent Synthesis of 2H-Chromenes -A Formal [3 + 3] Cycloaddition by aOne-Pot, Three-Step Cascade. -The title reaction of several bromoquinones with vinylstannane (II) proceeds via the palladium-catalyzed coupling, the HMPA-promoted enolization of the formed vinylquinones, and the final thermal electrocyclization. -(PARKER*, K. A.; MINDT, T. L.; Tetrahedron 67 (2011) 51, 9779-9786, http://dx.