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Synthesis of a novel bifunctional oxyammonium‐based ionic liquid: Application for the synthesis of pyrano[4,3‐b]pyrans and tetrahydrobenzo[b]pyrans
Journal of the Chinese Chemical Society ( IF 1.8 ) Pub Date : 2019-12-05 , DOI: 10.1002/jccs.201800468
Azra Zarei 1 , Meysam Yarie 1 , Mohammad Ali Zolfigol 1 , Khodabakhsh Niknam 2
Affiliation  

In the present investigation, a novel bifunctional oxyammonium‐based ionic liquid, namely, 2,2′‐(ethane‐1,2‐diylbis[oxy])bis(ethan‐1‐aminium)‐2,2,2‐trifluoroacetate, was designed and synthesized. The structure of the titled ionic liquid was characterized using Fourier‐transform infrared spectroscopy (FT‐IR), proton nuclear magnetic resonance (1HNMR), carbon nuclear magnetic resonance (13CNMR), fluorine nuclear magnetic resonance (19FNMR), homonuclear COSY nuclear magnetic resonance (NMR), thermogravimetry (TG), derivative thermogravimetry (DTG) analysis, X‐ray diffraction patterns (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The described ionic liquid demonstrated robust catalytic performance in the synthesis of pyrano[4,3‐b]pyrans and tetrahydrobenzo[b]pyran derivatives. The ionic liquid presents a high potential of recycling and reusing capability in both types of model reactions.

中文翻译:

新型双功能基于氧铵的离子液体的合成:在吡喃并[4,3-b]吡喃和四氢苯并[b]吡喃的合成中的应用

在本研究中,一种新型的基于双官能氧铵的离子液体,即2,2'-(乙烷-1,2-二基双[氧基])双(乙烷-1-铵)-2,2,2-三氟乙酸盐,被设计和合成。使用傅立叶变换红外光谱(FT-IR),质子核磁共振(1 HNMR),碳核磁共振(13 CNMR),氟核磁共振(19FNMR),同核COZY核磁共振(NMR),热重分析(TG),微分热重分析(DTG)分析,X射线衍射图(XRD),扫描电子显微镜(SEM)和透射电子显微镜(TEM)。所述离子液体在吡喃并[4,3-b]吡喃和四氢苯并[b]吡喃衍生物的合成中表现出强大的催化性能。在两种模型反应中,离子液体都具有很高的回收和再利用能力。
更新日期:2019-12-05
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