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新型纳米FeO负载的Lewis酸性离子液体作为一种高效且可循环使用的催化剂，用于在无溶剂超声条件下制备苯并氧杂蒽和吡咯。

New nano-FeO-supported Lewis acidic ionic liquid as a highly effective and recyclable catalyst for the preparation of benzoxanthenes and pyrroles under solvent-free sonication.

作者信息

Nguyen Hai Truong, Thi Le Ngoc-Phuong, Nguyen Chau Duy-Khiem, Tran Phuong Hoang

机构信息

Department of Organic Chemistry, Faculty of Chemistry, University of Science, Viet Nam National University Ho Chi Minh City 721337 Vietnam

出版信息

RSC Adv. 2018 Oct 18;8(62):35681-35688. doi: 10.1039/c8ra04893b. eCollection 2018 Oct 15.

DOI:10.1039/c8ra04893b
PMID:35547886
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9087937/
Abstract

A novel magnetic nanomaterial-immobilized Lewis acidic ionic liquid was successfully synthesized by the covalent embedding of 3-(3-(trimethoxysilyl)propyl)-1-imidazol-3-ium chlorozincate (ii) ionic liquid to the surface of FeO nanoparticles. The material was then characterized by FT-IR, SEM, TEM, TGA, ICP-OES, Raman, and EDS. Its performance as a new-generation Lewis acidic catalyst was also examined on the ultrasound-mediated synthesis of benzoxanthenes and pyrroles. Upon completion, the catalyst was simply recovered by an external magnet for multiple reuses without significant lessening of catalytic performance.

摘要

通过将3-(3-(三甲氧基甲硅烷基)丙基)-1-咪唑-3-氯锌酸盐(ii)离子液体共价嵌入到FeO纳米颗粒表面，成功合成了一种新型的磁性纳米材料固定化路易斯酸性离子液体。然后通过傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、热重分析(TGA)、电感耦合等离子体发射光谱(ICP-OES)、拉曼光谱和能谱分析(EDS)对该材料进行了表征。还研究了其作为新一代路易斯酸催化剂在超声介导的苯并氧杂蒽和吡咯合成中的性能。反应完成后，通过外部磁铁简单回收催化剂，可多次重复使用，且催化性能无明显降低。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/2afa7a4682f7/c8ra04893b-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/33775b08790c/c8ra04893b-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/7015752fdfdc/c8ra04893b-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/5c9413ac913b/c8ra04893b-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/6eb20dd1d79f/c8ra04893b-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/6ab8f2875f4d/c8ra04893b-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/78e16b204788/c8ra04893b-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/ccf503239e70/c8ra04893b-s3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/a7480c584b04/c8ra04893b-s4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/fe4ef37f7e45/c8ra04893b-s5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/2afa7a4682f7/c8ra04893b-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/33775b08790c/c8ra04893b-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/7015752fdfdc/c8ra04893b-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/5c9413ac913b/c8ra04893b-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/6eb20dd1d79f/c8ra04893b-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/6ab8f2875f4d/c8ra04893b-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/78e16b204788/c8ra04893b-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/ccf503239e70/c8ra04893b-s3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/a7480c584b04/c8ra04893b-s4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/fe4ef37f7e45/c8ra04893b-s5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b953/9087937/2afa7a4682f7/c8ra04893b-f5.jpg

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