Regioselective Synthesis of Trisubstituted Quinoxalines Mediated by Hypervalent Iodine Reagents
作者:Yumiko Suzuki、Ren Takehara、Kasumi Miura、Ryota Ito、Noriyuki Suzuki
DOI:10.1021/acs.joc.1c02087
日期:2021.12.3
A facile and regioselective synthesis of quinoxalines, an important motif in medicinal chemistry and materials sciences, was developed. Despite their prospective utility, the regioselective preparation of trisubstituted quinoxalines has not been previously established. In the reported system, hypervalent iodine reagents catalyzed the annulation between α-iminoethanones and o-phenylenediamines in a
开发了一种简便的区域选择性合成喹喔啉,这是药物化学和材料科学中的一个重要基序。尽管它们具有预期用途,但以前尚未建立三取代喹喔啉的区域选择性制备。在报道的系统中,高价碘试剂以化学/区域选择性方式催化 α-亚氨基乙酮和邻苯二胺之间的环化反应,得到三取代的喹喔啉。使用[双(三氟乙酰氧基)碘]苯和[双(三氟乙酰氧基)碘]五氟苯作为环化催化剂实现了优异的区域选择性(6:1 至 1:0)。