One-pot synthesis of 2-amino-3,4-dicyanopyridines from ketoximes and tetracyanoethylene via Cu(I)-catalyzed cyclization
作者:Ziwei Han、Jianguang Lv、Jianmin Zhang
DOI:10.1016/j.tet.2019.02.032
日期:2019.4
A novel approach to 2-amino-3,4-dicyanopyridines has been discovered from Cu(I)-catalyzed cyclizations of simple and easily available ketoximes and tetracyanoethylene (TCNE). The complexed radical mechanism involves cleavage of several OH/NO/CH bonds, and new CC/CN bonds formation. A wide variety of substrates with different functional groups could be smoothly converted into the corresponding products
从Cu(I)催化的简单易得的酮肟和四氰基乙烯(TCNE)的环化反应中发现了一种2-氨基-3,4-二氰基吡啶的新颖方法。复杂的自由基机制涉及几个O H / N O / C H键的断裂,以及新的C C / C N键的形成。可以将具有不同官能团的多种底物以中等收率平稳地转化为相应的产品。