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Synthesis 2010(18): 3188-3194
DOI: 10.1055/s-0030-1258183
DOI: 10.1055/s-0030-1258183
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Achiral and α-Amino Acid Derived Dicationic Imidazoliophanes
Further Information
Publication History
Received
12 April 2010
Publication Date:
16 July 2010 (online)


Abstract
Achiral and chiral imidazoliophanes were prepared by N-alkylation of chiral imidazole derivatives featuring an α-amino acid motif and subsequent double quarternization of the imidazole N3-position of the corresponding precyclophanes. Eight new optically pure imidazoliophanes were synthesized in good yields, whereas the molecular structure of one achiral analogue was confirmed by X-ray analysis.
Key words
cyclophanes - imidazoliophanes - amino acids - chiral pool - ligands
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