Potassium <i>tert</i>-Butoxide Promoted Intramolecular Arylation via a Radical Pathway
作者:Daniela Sustac Roman、Yoko Takahashi、André B. Charette
DOI:10.1021/ol201160s
日期:2011.6.17
Potassium tert-butoxide mediated intramolecular cyclization of aryl ethers, amines, and amides was efficiently performed under microwave irradiation to provide the corresponding products in high regioisomeric ratios. The reaction proceeds via single-electron transfer to initiate the formation of an arylradical, followed by a kinetically favored 5-exo-trig and subsequent ring expansion.
Palladium catalyzed annulation of benzylamines and arynes via C–H activation to construct 5,6-dihydrophenanthridine derivatives
作者:Manjoorahmed Asamdi、Prakashsingh M. Chauhan、Janki J. Patel、Kishor H. Chikhalia
DOI:10.1016/j.tet.2019.05.011
日期:2019.6
and versatile strategy employing palladium catalyst to synthesize 5,6-dihydrophenanthridine derivatives by annulation of benzylamines and arynes through C–Hactivation has been reported. This is promising one pot methodology which includes the use of Kobayashi's aryne precursor to construct plethora of 5,6-dihydrophenanthridine derivatives in moderate to good yield.