Synthesis of 9-Phenylacridines via Ortho-Lithiation-Cyclization Sequence
Chemistry of Heterocyclic Compounds
2015
Artis Kinēns,
Toms Kalniņs,
Edgars Sūna
Herein, we describe a previously unreported formation of acridines from triarylcarbinols under acidic conditions. Thus, treatment of tertiary alcs. with conc. aq. HCl in glacial AcOH at 90° provided 9-phenylacridines in 91-92% yield. The starting tertiary alcs. were prepd. by double addn. of ortho-lithiated pivaloyl anilines to benzoyl chloride in 76 and 68% yield, resp. Overall, the two-step ortho-lithiation cyclization sequence constitutes a convenient approach to 9-phenylacridines.
Atslēgas vārdi
acridine oxazine tertiary alcohol cyclization ortho-lithiation
DOI
10.1007/s10593-014-1616-y
Hipersaite
http://link.springer.com/article/10.1007%2Fs10593-014-1616-y
Kinēns, A., Kalniņs, T., Sūna, E. Synthesis of 9-Phenylacridines via Ortho-Lithiation-Cyclization Sequence. Chemistry of Heterocyclic Compounds, 2015, Vol.50, Iss.10, 1501.-1505.lpp. e-ISSN 1573-8353. Pieejams: doi:10.1007/s10593-014-1616-y
Publikācijas valoda
English (en)