Rotational Isomerism in Fluorene Derivatives. XV. Conformational Equilibria of 2-Substituted and 2,7-Disubstituted 9-(2'-Dimethylaminophenyl)-fluorene Derivatives and the Effects of Acid on Them

Article abstract of DOI:10.1246/bcsj.62.1093

Several 9-(2'-dimethylaminophenyl)-9-fluorenols (2) and 9-(2'-dimethylaminophenyl)fluorens (3), which had electron-attracting or electron-releasing groups at 2- or 2,7-positions of the fluorene ring, were synthesized.The conformational equilibria (anti <-