A Polystyrene‐Supported 9‐Amino(9‐deoxy)epi Quinine Derivative for Continuous Flow Asymmetric Michael Reactions.

A polystyrene-supported quinine derivative is successful applied as a catalyst for the Michael addition of ethyl nitroacetate (II) to enones (I) under batch conditions leading to a diastereomeric mixture of esters (III) and (IV).