5,5′-Position linked 1,1′-biphenyl axial chiral ligand and method for preparing the same
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United States of America Patent
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Jul 13, 2010
Grant Date -
Jun 18, 2009
app pub date -
Dec 29, 2006
filing date -
Dec 29, 2005
priority date (Note) -
Expired
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Abstract
The present invention relates to a 5,5′-position linked 1,1′-biphenyl axis chiral ligand in chemical industry field. The present invention incorporates both the central chirality of oxazoline and the axial chirality of diphenyls. Such ligand can be used in various asymmetric reactions catalyzed by metal with high reactivity and stereoselectivity, and thus represents a good application outlook. The ligand of the present invention has the formula of:=hydrogen, alkyl, substituted or unsubstituted aryl, substituted or unsubstituted benzyl.
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