Conformational Study of 2,2‘-Homosubstituted 1,1‘-Binaphthyls by Means of UV and CD Spectroscopy

The dihedral angle θ of 1,1‘-binaphthyl derivatives is quantitatively related to the wavelength splitting Δλmax of the 220 nm couplet of the CD spectra. This relation is almost independent of measurement conditions (solvent, concentration). Its reliability has been quite successfully tested on about...

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Bibliographic Details
Published in:Journal of the American Chemical Society 1999-09, Vol.121 (35), p.7998-8004
Main Authors: Di Bari, Lorenzo, Pescitelli, Gennaro, Salvadori, Piero
Format: Article
Language:English
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Summary:The dihedral angle θ of 1,1‘-binaphthyl derivatives is quantitatively related to the wavelength splitting Δλmax of the 220 nm couplet of the CD spectra. This relation is almost independent of measurement conditions (solvent, concentration). Its reliability has been quite successfully tested on about 10 compounds derived from 2,2‘-dimethyl-1,1‘-binaphthyl. A simple and versatile method for the conformational assessment of this class of compounds is reported.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja990326b