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2005
Aziridine derivatives
R 0040
A Mannich—Cyclization Approach for the Asymmetric Synthesis of Saturated
— A short and efficient route to various saturated N-heterocycles is
19- 113 N-Heterocycles.
presented. The strategy is highlighted by a highly selective Mannich dimerization followed by an unprecedented dehydrative cyclization reaction in the presence of CDI.
The method is applied for the preparation of a variety of the four-membered azetidines
as well as pyrrolidine (V) and piperidine (VII). — (MUENCH, A.; WENDT, B.;
CHRISTMANN*, M.; Synlett 2004, 15, 2751-2755; Inst. Org. Chem., RWTH
Aachen, D-52074 Aachen, Germany; Eng.) — Steudel
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