Synthesis of chromeno[2,3-d]imidazol-9(1 H)-ones via tandem reactions of 3-iodochromones with amidines involving copper-catalyzed C-H functionalization and C-O bond formation
A novel six-membered heterocyclic skeleton of imidazochromone was prepared via an efficient one-pot reaction including a key step of copper-catalyzed aerobic C-H intramolecular cycloetherification. Notably, this process does not require the presence of st
Sheng, Jia,Chao, Bo,Chen, Hong,Hu, Youhong
p. 4508 - 4511
(2013/09/24)
Copper(I)-mediated cascade reactions: An efficient approach to the synthesis of functionalized benzofuro[3,2-d ]pyrimidines
A novel cascade reaction was developed for the synthesis of diverse members of a series of benzofuro[3,2-d]pyrimidine derivatives. The process utilizes readily prepared 3-chlorochromenones and various commercially available amidines and their analogues as