Synthesis of β‐Nitrostyrenes in the Presence of Sulfated Zirconia and Secondary Amines.

A simple and efficient protocol for the synthesis of β-nitrostyrenes has been achieved by the use of sulfated zirconia–secondary amine (piperidine, pyrrolidine, proline or prolinol) cooperative systems. The condensation of different aldehydes and nitromethane demonstrates the efficiency of this process, which does not require high-temperature reactivation for the reuse of the catalytic material.