Production method and its derivatives α- amino acids using the same and optically active quaternary ammonium salt having axial chirality

摘要

In accordance with the present invention, can be produced and can be produced 2,2-dimethylene bromide binaphthyl derivatives, obtained by the reaction with a secondary amine easily at relatively low process simplification chiral phase transfer catalyst having the structure as is provided. Chiral phase transfer catalyst of the present invention is a compound represented by the following formula (I), has an alkyl group R ⁷ of the long chain in its chemical structure. Therefore, in such asymmetric alkylation, that high stereoselectivity can be obtained in the reaction could not obtain sufficient stereoselectivity is expected in the conventional catalysts.