Issue 1, 2000

Chiral discrimination of 2-arylalkanoic acids by (1S,2R)-1-aminoindan-2-ol through the formation of a consistent columnar supramolecular hydrogen-bond network

Abstract

Enantiopure cis-1-aminoindan-2-ol was selected as a basic resolving agent for racemic 2-arylalkanoic acids on the basis that its rigid cis-conformation would favor the formation of a supramolecular hydrogen-bonded column, in which chiral discrimination of the racemic carboxylate would occur. It was found that this amino alcohol possesses high resolving efficiency for a variety of racemic acids; also, X-ray crystallographic analyses of the diastereomeric salts showed that a columnar hydrogen-bond network is formed in both the less- and more-soluble diastereomeric salts, as we had expected. A detailed study on the stabilising interactions suggested that there are two that play an important role: (i) hydrogen bonding between the ammonium and hydroxy groups and the acid carboxylate, which determines the formation of the columnar network and (ii) CH  π, which influences the herringbone packing of the aromatic groups, implying that it also plays some role in chiral discrimination.

Supplementary files

Article information

Article type
Paper
Submitted
09 Jul 1999
Accepted
28 Oct 1999
First published
23 Dec 1999

J. Chem. Soc., Perkin Trans. 2, 2000, 111-119

Chiral discrimination of 2-arylalkanoic acids by (1S,2R)-1-aminoindan-2-ol through the formation of a consistent columnar supramolecular hydrogen-bond network

K. Kinbara, Y. Kobayashi and K. Saigo, J. Chem. Soc., Perkin Trans. 2, 2000, 111 DOI: 10.1039/A905566E

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