Optically active quaternary ammonium salt having axial asymmetry and process for producing α-amino acid and derivative thereof with the same
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United States of America Patent
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Apr 15, 2014
Grant Date -
Jun 14, 2007
app pub date -
Jan 23, 2007
filing date -
Jan 30, 2004
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Abstract
The present invention provides a compound of the following formula (I) below. This compound (I) can be produced by reacting a 2,2′-dimethylene bromide-1,1′-binaphthyl derivative, which can be produced by a relatively small number of processes, with an easily available secondary amine. This compound (I) is useful as a chiral phase-transfer catalyst.
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