Synfacts 2009(1): 0092-0092  
DOI: 10.1055/s-0028-1087427
Organo- and Biocatalysis
© Georg Thieme Verlag Stuttgart ˙ New York

anti-Mannich Reaction of Aldehydes with in situ Generated N-Cbz and N-Boc Imines

Contributor(s): Benjamin List, Kristina Zumbansen
C. Gianelli, L. Sambri, A. Carlone, G. Bartoli, P. Melchiorre*
Università di Bologna, Italy
Further Information

Publication History

Publication Date:
18 December 2008 (online)

Significance

An enantio- and diastereoselective anti-Mannich reaction of aldehydes with N-Cbz- and N-Boc-protected imines catalyzed by secondary amine 1 is reported. Since N-carbamoyl imines are rather unstable, a simple and convenient protocol for their in situ generation has been developed. This method proved to be successful for a variety of aliphatic aldehydes.