Synthesis of planar chiral ferrocenyl 1,3-diamines and 1,3-amino ethers
Anderson, James C.; Blake, Alexander J.; Arnall-Culliford, Jennifer C.; Anderson James C.; School of Chemistry, University of Nottingham; Blake Alexander J.; School of Chemistry, University of Nottingham; Arnall-Culliford Jennifer C.; School of Chemistry, University of Nottingham
Журнал:
Organic & Biomolecular Chemistry
Дата:
2003
Аннотация:
The efficient syntheses of novel planar chiral 1,3-diamines and 1,3-amino ethers with an oxy or amino function directly bound to the cyclopentadienyl ring of ferrocene has been developed. The key reaction is the Cu2O promoted substitution of (pR)-N,N-diisopropyl-2-iodoferrocenecarboxamide with either phthalimide or AcOH to introduce nitrogen or oxygen functionality onto the cyclopentadienyl ring. The enantiomerically pure iodoferrocene derivative is available from the known enantioselective ortho-lithiation of N,N-diisopropylferrocenecarboxamide with n-BuLiâ sparteine. In the course of these studies the synthesis of a novel C2 symmetric C-2 dimer of N,N-dimethyl-1-ferrocenylethylamine was characterised by single crystal X-ray diffraction.
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