Structure, conformation, stereodynamics, and absolute configuration of the atropisomers of fluorenylidene derivatives.
The barrier for the interconversion of the conformational atropisomers of an aryl fluorenylidene derivative was determined by variable-temperature NMR technique. In the case of a more hindered compound the two atropisomers were isolated and the structure determined by X-ray diffraction. The absolute configuration was assigned by theoretical interpretation of the Electronic Circular Dichroism spectrum (ECD).
Department of Organic Chemistry A. Mangini, University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy.
Lodovico
L
Lunazzi
Michele
M
Mancinelli
Andrea
A
Mazzanti
D018360:Crystallography, X-Ray; D005449:Fluorenes / Q000737:chemistry*; D015394:Molecular Structure; D011789:Quantum Theory; D013237:Stereoisomerism
D005449:Fluorenes