Copper(I) Iodide/Boron Trifluoride Etherate-Cocatalyzed Aerobic Dehydrogenative Reactions Applied in the Synthesis of Substituted Heteroaromatic Imidazo[1,2-<i>a</i>]pyridines
作者:Zhong-Jian Cai、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1002/adsc.201300333
日期:2013.9.16
dehydrogenation coupling reactions, similar transforms initiated by copper/oxygen have attracted more and more attention. We have investigated a novel construction of heteroaromatic imidazo[1,2‐a]pyridines through copper(I) iodide/boron trifluoride etherate/oxygen‐mediated dehydrogenative reactions of aryl alkyl or alkyl alkyl ketones with 2‐aminopyridines. Four hydrogen atoms are removed and two new CN bonds
与众所周知的钯催化的氧化脱氢偶联反应相比,由铜/氧引发的类似转化越来越受到关注。我们研究了通过芳基烷基或烷基烷基酮与2-氨基吡啶的碘化亚铜(I)/三氟化硼醚化物/氧介导的脱氢反应,研究杂芳族咪唑并[1,2- a ]吡啶的新型结构。通过亚胺的形成和氧化性C(sp 3)H官能化一步除去四个氢原子并形成两个新的CN键。