ChemInform Abstract: Organocatalytic Access to Enantioenriched Dihydropyran Phosphonates via an Inverse‐Electron‐Demand Hetero‐Diels—Alder Reaction.

Abstract

AbstractThe presented reaction, catalyzed by a bifunctional squaramide containing aminocatalyst is applicable to aliphatic, as well as aromatic α,β‐unsaturated acyl phosphonates bearing electron‐withdrawing or donating substituents to give good to high yields and good enantioselectivities.