Zn[(L)proline]: A powerful catalyst for the very fast synthesis of quinoxaline derivatives at room temperature

Zn[(L)proline] was found to be an effective catalyst for the very fast synthesis of quinoxaline derivatives from the condensation of the o-phenylenediamines and 1,2-dicarbonyl compounds at room temperature in excellent yields. The catalyst is recyclable and reusable. (c) 2006 Published by Elsevier B.V.