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Synthesis of Dipentaerythritol from Pentaerythritol under Acidic Conditions
Organic Process Research & Development ( IF 3.1 ) Pub Date : 2020-09-02 , DOI: 10.1021/acs.oprd.0c00269
Mélissa Landart 1 , Marc Lemaire 1 , Estelle Métay 1
Affiliation  

The direct synthesis of dipentaerythritol (DPE) from pentaerythritol (PE) was studied under acidic conditions. After optimization of the reaction parameters in a batch reactor, DPE was obtained with 50% selectivity when 50% PE was converted. This process, using PE in suspension in sulfolane (PE/sulfolane ratio = 2333 g/L) at 175 °C for 60 min, required a low amount of sulfuric acid (0.5 mol %). The optimized conditions were transposed to a 140 grams scale process. Finally, DPE was isolated with 16% yield (72% gas chromatography, GC purity) for 28% conversion of PE that corresponds to 57% DPE selectivity.

中文翻译:

酸性条件下由季戊四醇合成二季戊四醇

在酸性条件下研究了由季戊四醇(PE)直接合成二季戊四醇(DPE)的方法。在间歇式反应器中优化反应参数后,当转化50%PE时,DPE的选择性为50%。在175°C下将PE悬浮在环丁砜中(PE /环丁砜比= 2333 g / L)60分钟的过程中,需要少量的硫酸(0.5 mol%)。优化的条件转入140克规模的过程。最后,分离出DPE的收率为16%(72%气相色谱,GC纯度),相当于28%的PE转化率,相当于57%的DPE选择性。
更新日期:2020-09-02
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