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1H and 13C NMR studies of some aromatic dilactones (precursors of paracyclophanes) (1981)

Solladié-Cavallo, Arlette ; Hilbert, Marcel

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 17 (1981), S. 227-231

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ISSN: 0030-4921

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Carbon-13 and proton NMR data of macrocyclic diaromatic dilactones are presented. The observed behaviour of the spectra as a function of temperature shows that the energy barrier for the re-orientation of the side chains is lower than 49 kJ mol-1 (12 kcal mol-1) and that the energy barrier for the rotation of the aromatic rings is larger than 99 kJ mol-1 (24 kcal mol-1). Hence, chiral substituted dilactones of this type will be resolvable, and the enantiomers can be easily handled at room temperature.

Additional Material: 1 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/mrc.1270170321

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