As defined by Thomson ISI®’s Essential Science Indicators, Hot Papers are articles published within the last 2 years receiving the most citations over the most recent 2-month period.

According to that, the article Polystyrene-supported hydroxyproline: An insoluble, recyclable organocatalyst for the asymmetric aldol reaction in water (Org. Lett. 2006, 8, 4653-4655), co-authored by Daniel Font, Ciril Jimeno and Miquel À. Pericàs, has been distinguished as Hot Paper in May 2008.