1. 1) For recent reviews, see: (a) Berkessel, A.; Gröger, H. Asymmetric Organocatalysis-From Biomimetic Concepts to Powerful Methods for Asymmetric Synthesis; Wiley-VCH: Weinheim, 2005.
2. Asymmetric Catalysis by Chiral Hydrogen-Bond Donors
3. (c) Enantioselective Organocatalysis: Reactions and Experimental Procedures; Dalko, P. I., Ed.; Wiley-VCH: New York, 2007.
4. Recent Progress in Chiral Brønsted Acid Catalysis
5. Small-Molecule H-Bond Donors in Asymmetric Catalysis