OPTICALLY ACTIVE QUATERNARY AMMONIUM SALT HAVING AXIAL ASYMMETRY AND PROCESS FOR PRODUCING -AMINO ACID AND DERIVATIVE THEREOF WITH THE SAME
申请人:NAGASE & COMPANY, LTD.
公开号:EP1870403A1
公开(公告)日:2007-12-26
The present invention provides a chiral phase-transfer catalyst of the following formula (I):
The compound (I) can be produced by reacting a 2,2'-dimethylene bromide-1,1'-biphenyl derivative, which can be produced through comparatively small number of steps, with an easily available secondary amine.
OPTICALLY ACTIVE QUATERNARY AMMONIUM SALT HAVING AXIAL ASYMMETRY AND PROCESS FOR PRODUCING ALPHA-AMINO ACID AND DERIVATIVE THEREOF WITH THE SAME
申请人:Maruoka Keiji
公开号:US20090270614A1
公开(公告)日:2009-10-29
The present invention provides a chiral phase-transfer catalyst of the following formula (I):
The compound (I) can be produced by reacting a 2,2′-dimethylene bromide-1,1′-biphenyl derivative, which can be produced through comparatively small number of steps, with an easily available secondary amine.