Jennings, WB,Kochanewycz, MJ,Lunazzi, L;

1997

November

Rna-A Publication of The Rna Society

Conformation and stereodynamics of alkyl 9-anthryl sulfoxides

Validated

()

ARYL

2271

2273

Several alkyl 9-anthryl sulfoxides exhibit broadening of the aromatic peri-proton signal in H-1 NMR spectra recorded at ambient temperature due to hindered rotation about the 9-anthryl-sulfur bond; the rotational barriers lie in the range 10.9-18.9 kcal mol(-1). The preferred conformation and torsional barriers in these sulfoxides and in mesityl methyl sulfoxide have also been investigated by molecular mechanics calculations.