Iodine/CuI-mediated alkyne–carbonyl metathesis reaction: synthesis of 1-aryl-1,2-dihydrochromeno[2,3-b]azepine-3,6-dione
作者:Sourav Maiti、Pritam Biswas、Jaydip Ghosh、Michael G.B. Drew、Chandrakanta Bandyopadhyay
DOI:10.1016/j.tet.2013.11.062
日期:2014.1
Iodine/cuprous iodide-mediated intramolecular alkyne carbonyl metathesis reaction has been developed using 2,-(N-aryl-N-propargyl)aminochromone-3-carbaldehyde as the substrate. It led to the synthesis of hitherto unreported chromeno[2,3-b]azepine-3,6-dione. The special features of this methodology are mild reaction conditions, 100% atom economy and use of inexpensive reagents. This is the first example of I-2/Cul-mediated alkyne carbonyl metathesis reaction. (C) 2013 Elsevier Ltd. All rights reserved.