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Merck

Stereoselective preparation of β,γ-methano-GABA derivatives.

Organic & biomolecular chemistry (2011-09-23)
David J Aitken, Ludovic Drouin, Sarah Goretta, Régis Guillot, Jean Ollivier, Marco Spiga
RESUMEN

The Kulinkovich-de Meijere reaction between an unsaturated Grignard reagent and a chiral amide takes place with a high trans stereoselectivity and provides a convenient access to non-racemic trans cyclopropylamines. These compounds are transformed in four steps into the corresponding N-protected β,γ-methano-GABA derivatives, which are obtained for the first time in enantiomerically pure form. The corresponding transformations of the cis cyclopropylamine adducts are also described.

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Sigma-Aldrich
Cyclopropylamine, 98%