F. Guenoun et al., PYRROLIDINOPIPERAZINEDIONE AS CHIRAL AUXILIARY AND ITS USE IN ASYMMETRIC MANNICH SYNTHESIS, Tetrahedron letters, 38(9), 1997, pp. 1563-1566
Functionalised diketopiperazines (DKPs) are easily obtained optically
pure by disymmetrization of a mesopyrrolidine and can be easily conver
ted to an alpha-amino amine containing compound. As a first example, o
ne of the new chiral auxiliaries has been used to prepare an optically
pure beta-amino ester through a Mannich reaction. (C) 1997 Published
by Elsevier Science Ltd.