Controllable access to multi-substituted imidazoles via palladium(<scp>ii</scp>)-catalyzed C–C coupling and C–N condensation cascade reactions
作者:Haihua Yu、Li Xiao、Xicheng Yang、Liming Shao
DOI:10.1039/c7cc05315k
日期:——
A novel and efficient protocol for the synthesis of various 2, 4-disubstituted, 1, 2,4-trisubstituted and 1, 2, 4, 5-tetra-substituted imidazoles at will via cascade palladium catalyzed C-C coupling followed by intramolecular C-N bond formation was developed. Readily accessible boronic acids and N-substituted-2-amino-acetonitriles were firstly reported as starting materials to construct di-, tri-,
通过级联钯催化的CC偶合反应,然后形成分子内CN键,可随意合成各种2,4-二取代,1,2,4-三取代和1,2,4,5-四取代的咪唑的新颖有效的方法发展了。首先报道了容易获得的硼酸和N-取代的2-氨基乙腈,是制备二,三和四取代的咪唑的起始原料,其产率高至优异。