作者:P. Metzger、C. Cabestaing、E. Casadevall、A. Casadevall
DOI:10.1002/mrc.1270190307
日期:1982.7
AbstractThe 13C NMR spectra of trans‐ and cis‐fused bicyclo[4.n.0]alkanes, where n=4, 3 and 2, were determined. The distortion of the six membered ring, which is due to the strain arising from the 1,2 fusion of cyclohexane with a smaller ring, is apparent mainly for the chemical shifts of the ring junction carbons. Both for the trans‐and for the cis‐fused hydrocarbons the results support a cyclohexane in a chair conformation, distorted to a different degree according to the size of the other ring. The geometries of the different compounds in the series were calculated.