Nano CoFe<sub>2</sub>O<sub>4</sub> supported antimony(<scp>iii</scp>) as an efficient and recyclable catalyst for one-pot three-component synthesis of multisubstituted pyrroles
A novelmagnetic nano-CoFe2O4 supported Sb ([CoFe2O4@SiO2–DABCO–Sb]) was successfully constructed, which exhibited high catalytic activity for one-potthree-componentsynthesis of multisubstituted pyrroles in the reaction of amines, nitroolefin and 1,3-dicarbonyl compounds. The magneticheterogeneouscatalyst could be easily recovered using an external magnet and reused many times without significant
成功地构建了一种新型的磁性纳米CoFe 2 O 4负载的Sb([CoFe 2 O 4 @SiO 2 –DABCO-Sb]),该催化剂对多取代吡咯的一锅三组分合成具有很高的催化活性。胺,硝基烯烃和1,3-二羰基化合物。磁性非均相催化剂可以使用外部磁体容易地回收,并且可以多次重复使用而不会显着降低催化活性。
The acidic ionic liquid [BSO<sub>3</sub>HMIm]HSO<sub>4</sub>: a novel and efficient catalyst for one-pot, three-component syntheses of substituted pyrroles
作者:Yuan Luo、Bao-Qiang Zhang、Yan-Hong He、Zhi Guan
DOI:10.1515/znb-2014-0108
日期:2015.1.1
was used as an efficient catalyst for the synthesis of a variety of pyrrole derivativesvia a one-pot, three-component condensation of amines, nitroolefins, and 1,3-dicarbonylcompounds. Good to excellent yields of 72–96% were obtained under reflux in ethanol. The catalyst could easily be recovered and recycled up to six times, resulting in good yields without prolonging the reaction time. This method
Three-Component Coupling Synthesis of Diversely Substituted N-Aryl Pyrroles Catalyzed by Iron(III) Chloride
作者:Soumen Sarkar、Krishnendu Bera、Sukhendu Maiti、Srijit Biswas、Umasish Jana
DOI:10.1080/00397911.2011.650273
日期:2013.6.3
Abstract An efficient and operationally simple three-componentcouplingsynthesis of varieties of N-aryl substituted pyrroles is described in the presence of sustainable and environmentally benign metal catalyst, FeCl3. This method provides a straightforward approach for the synthesis of N-aryl substituted pyrroles in good yields from easily accessible starting materials such as nitroalkenes, 1,3-dicarbonyl
Zirconocene dichloride catalysed one-pot synthesis of pyrroles through nitroalkene-enamine assembly
作者:Sandeep Goyal、Jatinkumar K. Patel、Mukesh Gangar、Kapil Kumar、Vipin A. Nair
DOI:10.1039/c4ra09873k
日期:——
Zirconocene dichloride was found to be a highly efficient catalyst for the synthesis of multi-substituted pyrroles by a three-component, one-pot reaction.
锆二氯化物被发现是合成多取代吡咯烷的高效催化剂,通过三组分、一锅法反应。
Synthesis of Pyrroles from β-Enamines and Nitroolefins Catalyzed by I<sub>2</sub> under High-speed Vibration Milling (HSVM)
A solvent-free reaction, using a high-speed vibration milling (HSVM) technique, has been developed for the synthesis of polysubstituted pyrroles from β-enamines and nitroolefins as the raw materials, by using iodine as the catalyst. The influences of the vibration frequency and the reaction time were investigated and a series of 2,3,4-polysubstituted pyrroles were obtained in good yields at short reaction times (20 min) under the HSVM condition. It is an efficient, simple, and moderate approach for synthesizing polysubstituted pyrroles under the HSVM conditions.