A. Nishida, M. Takeshita, S. Fujisaki
Nov 1, 1988
Citations
0
Influential Citations
3
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The compound 9-(2-methylaminophenyl)fluorene (2) was obtained by treatment of 9-(2-dimethylaminophenyl)-9-fluorenol (1b) with dry hydrogen bromide in acetic acid. The conformational equilibrium (ap\ightleftarrowssp) of 2 was investigated on the basis of dynamic 1H NMR spectra in CDCl3. The stabilization of the ap-iorm could be ascribed to an N–H···π interaction between the methylamino group and the fluorene ring. The effect of trifluoroacetic acid on the equilibrium of 2 is also discussed.