Electronic absorption and circular dichroism spectra of the perturbed coplanar cis-diene chromophore in deuterium- and methyl-substituted 7,7-dimethylbicyclo[4.1.1]octa-2,4-dienes
作者:Alan R. Browne、Francis R. Kearney、Stephen F. Mason、Leo A. Paquette、Alex F. Drake
DOI:10.1021/ja00357a025
日期:1983.9
monodeuterated 7,7-dimethylbicyclo(4.1.1)octa-2,4-dienes have been prepared with known absolute configuration from (+)-nopinone. Access to their methyl congeners has been achieved from (+)-..cap alpha..-pinene and (+)-nopinone, respectively. The chirality is due solely to isotopic substitution. The contributions of the C-D and C-CH/sub 3/ groups to the observed absorption and circulardichroismspectra are analyzed