Iron‐Catalyzed Synthesis of Dihydronaphthalenones from Aromatic Oxime Esters
作者:Youcan Zhang、Zhiping Yin、Xiao‐Feng Wu
DOI:10.1002/adsc.201900283
日期:2019.7.2
radical‐mediated synthesis of dihydronaphthalenones from oxime esters has been developed. By using iron salt as a green and inexpensive catalyst, various α‐aryl oxime esters were transformed into the corresponding dihydronaphthalenones in moderate to good yields with high chemo‐selectivities. The reaction proceeds via 1,5‐hydrogen atom transfer and then intramolecular radical cyclization sequence.
Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.