固体超强碱催化合成α,α'-二亚糠基环己酮的研究

Synthesis of α,α′-difurfurylidene Cyclohexanone by Solid Superbase

以γ-Al2O2-O2-2Na+固体超强碱为催化剂,催化糠醛和环己酮缩合,合成了α,α'-二亚糠基环己酮.传统方法是使用液体碱等均相催化剂,该文以固体超强碱为催化剂,探索了一种新的合成工艺.研究了反应温度、原料配比、催化剂用量和反应时间对合成α,α'-二亚糠基环己酮的影响,并确定了最佳的反应条件.结果表明:反应温度为40℃,催化剂用量为原料质量的5%,反应时间为2 h时,产物产率最高,达92.1%.

Difurfurylidene cyclohexanone was synthesized via furfural and cyclohexanone using γ-Al2O2O2-2Na＋ as the catalyst. They are usually prepared by means of condensation catalyzed by a liquid basic catalyst. In this paper difurfurylidene cyclohexanone was prepared through catalysis by a new solid superbase. The influence of reaction temperature, ratio between reactants, dosage of catalyst and reaction time was investigated and the best conditions were found out the optimal reaction conditions： reaction temperature is 40 ℃, the amount of catalyst is 5% of raw material, reaction time is two hours, the highest percent of production yield up to 92.1%.