Squaramide-Catalyzed Asymmetric Reactions.

Bifunctional squaramides have emerged as powerful hydrogen-bonding catalysts for promoting a wide array of useful asymmetric reactions, which provides convenient methods for the construction of complex molecular structures and chiral biologically active compounds. This review highlights the recent advances of our research group in the chiral squaramide-catalyzed asymmetric reactions, including Michael addition, Mannich reaction, aza-Henry reaction, Strecker reaction as well as cascade or sequential reactions.