A New Route to Acridines: Pauson-Khand Reaction on Quinoline-Bearing 1-En-7-ynes Leading to Novel Tetrahydrocyclopenta[<i>c</i>]acridine-2,5-diones
作者:Philippe Belmont、Amaury Patin
DOI:10.1055/s-2005-870016
日期:——
Efficient Pauson-Khand reactions on quinolines bearing 1-en-7-ynes features gave tetrahydrocyclopenta[c]acridine derivatives. The quinoline intermediates were obtained in two steps: a Sonogashira reaction with functionalized alkynes (TMS, Bu, Ph, CHB 2 OTHP) followed by a Grignardreaction with allylmagnesiumbromide. The sequence provides new acridine structures in four high yielding steps from commercially