Chemoselective synthesis of 4-oxo-2-aryl-4,10-dihydropyrimido [1,2-a][1,3]benzimidazol-3-yl cyanides via [3+3] atom combination of 2-aminobenzimidazole with ethyl-α-cyanocinnamoates
作者:Hassan Sheibani、Fahimeh Hassani
DOI:10.1002/jhet.640
日期:2011.7
Chemoselective synthesis of 4‐oxo‐2‐aryl‐4,10‐dihydropyrimido[1,2‐a][1,3]benzimidazol‐3‐yl cyanides from three‐component reactions of 2‐aminobenzimidazole, aldehydes, and ethyl cyanoacetate via [3+3] atom combination is reported. The effect of different base catalysts such as sodium acetate, triethylamine, and magnesium oxide MgO on the product yield has also been investigated under conventional heating
4-氧代-2-芳基- 4,10-二氢嘧啶的化学选择性合成[1,2一个] [1,3]苯并咪唑-3-基从2-氨基苯并咪唑,醛和氰基乙酸乙酯三组分反应的氰化物通过报告了[3 + 3]原子的组合。在常规加热条件下,还研究了不同的碱催化剂,例如乙酸钠,三乙胺和氧化镁MgO对产物收率的影响。J.杂环化学。(2011)。