Molecular Catalysis ( IF 3.9 ) Pub Date : 2017-08-05 , DOI: 10.1016/j.mcat.2017.07.010 Alireza Hashemzadeh , Mostafa M. Amini , Reza Tayebee , Atefeh Sadeghian , Lee J. Durndell , Mark A. Isaacs , Amin Osatiashtiani , Christopher M.A. Parlett , Adam F. Lee
A magnetic inorganic-organic catalyst, [email protected]3O4/EN-MIL-101 (EN = ethylenediamine, PTA = phosphotungstic acid) was fabricated and characterized by XRD, HRTEM, FESEM, UV–vis, TGA-DTA, FT-IR, XPS and porosimetry. PTA retained the parent Keggin structure upon dispersion throughout the amine-functionalized chromium terephthalate metal-organic framework, over which magnetic Fe3O4 nanoparticles were previously introduced. The resulting composite heterogeneous solid acid was an active catalyst for the one-pot synthesis of diverse 2H-indazolo[2,1-b] phthalazine-triones in good → excellent yields under mild, solventless condition, and offers facile separation and excellent recyclability.
中文翻译:
一种可磁分离的H 3 PW 12 O 40 @Fe 3 O 4 / EN-MIL-101催化剂,用于一锅法无溶剂合成2H-吲唑并[2,1- b ]酞嗪三酮
制备了一种磁性无机有机催化剂,[受电子邮件保护] 3 O 4 / EN-MIL-101(EN =乙二胺,PTA =磷钨酸),并通过XRD,HRTEM,FESEM,UV-vis,TGA-DTA,FT进行了表征-IR,XPS和孔隙率法。PTA分散在整个胺官能化的对苯二甲酸铬金属-有机骨架上时保留了母体Keggin结构,先前已在该骨架上引入了磁性Fe 3 O 4纳米粒子。所得的复合非均相固体酸是一种活性催化剂,可在温和无溶剂的条件下以良好→优异的收率一锅法合成各种2H-吲唑并[2,1- b ]邻苯二甲腈-三酮,并易于分离且具有出色的可回收性。