Critical Influence of 5-Hydroxymethylfurfural Aging and Decomposition on the Utility of Biomass Conversion in Organic Synthesis
作者:Konstantin I. Galkin、Elena A. Krivodaeva、Leonid V. Romashov、Sergey S. Zalesskiy、Vadim V. Kachala、Julia V. Burykina、Valentine P. Ananikov
DOI:10.1002/anie.201602883
日期:2016.7.11
stored as an oil after a biomass conversion process. In contrast, a much higher yield of 65 % was obtained by using 5‐HMF isolated in crystalline state from an optimized biomass conversion process. The molecular mechanisms responsible for 5‐HMF decomposition in solution were established by NMR and ESI‐MS studies. A highly selective synthesis of a 5‐HMF derivative from glucose was achieved using a protecting
光谱研究表明,由于氢键网络的存在,溶液中存在5-羟甲基糠醛(5-HMF)分子的特定排列,这种排列容易促进5-HMF的老化。该平台化学品质量的下降限制了其实际应用,尤其是在合成/制药领域。模型药物雷尼替丁(Zantac®)是从5-HMF开始合成的,仅15%的产率被分离出来,并在生物质转化过程后以油的形式存储。相比之下,通过使用从优化的生物质转化过程中分离出的结晶状态的5-HMF,可获得高得多的65%的收率。通过NMR和ESI-MS研究确定了溶液中5-HMF分解的分子机理。使用O(6)位置的保护基可以从葡萄糖中高度选择性地合成5-HMF衍生物。