A convenient solvent-free synthesis of γ-nitroketones and γ-nitroesters based on the reaction of nitroalkanes with α,β-unsaturated carbonyl compounds in the ultrasonically activated heterogeneous catalytic system 1-butyl-3-methylimidazolium tetra-fluoroborate ([bmim][BF4])/K2CO3 has been developed. The system retained its catalytic activity over three reaction cycles.
基于1-丁基-3-甲基
咪唑四
氟硼酸盐([bmim][BF4])/K2CO3在超声激活的非均相催化体系中,通过硝基烷与α,β-不饱和羰基化合物的反应,已开发出一种方便的无溶剂合成γ-硝基酮和γ-硝基酯的方法。该系统在三次反应循环中保持了其催化活性。