Efficient autocatalytic oximation of bio-based 2,5-diformylfuran with aqueous hydroxylamine under mild conditions
作者:Jinbo Chen、Zhongsen Ma、Changjiu Xia、Yajie Zhang、Xingtian Shu
DOI:10.1039/d0gc01439g
日期:——
generation of DFFD, which provided enough H+ to efficiently autocatalyse the oximation. Compared with hydroxylamine hydrochloride, AHA was much more efficient, and the generation of waste salts and wastewater decreased by 99.94% and 25%, respectively. Hence, we provide an efficient and clean DFFD production route, which is promising for the green utilization of bio-based furanic compounds.
2,5-二甲酰呋喃二肟(DFFD)是一种刚性的生物基材料,是制造高级功能聚合物的有前途的前体。在30°C下,用0.10 wt%HCl在50 wt%羟胺水溶液(AHA)中引发的生物基2,5-二甲酰呋喃(DFF)进行酸自动催化肟化,可在5分钟内产生超过99%DFFD。通过逐步AHA进料策略,AHA的利用效率和DFF的转化率分别为93%和100%。由于DFFD不溶于水,因此可以通过简单过滤轻松地将生成的DFFD分离成千克规模。在反应过程中,随着DFFD的快速生成,pH值从6.0连续降低至2.0,从而提供了足够的H +有效地自动催化肟化反应。与盐酸羟胺相比,AHA的效率要高得多,废盐和废水的产生分别减少了99.94%和25%。因此,我们提供了一种高效清洁的DFFD生产路线,这对于绿色利用生物基呋喃化合物是很有前途的。