[Ce(l-Pro)2]2 (Oxa) as a heterogeneous recyclable catalyst: synthesis of pyrazoles under mild reaction conditions

2016 ◽  
Vol 40 (11) ◽  
pp. 9471-9476 ◽  
Author(s):  
Ramesh Katla ◽  
Rakhi Chowrasia ◽  
Padma S. Manjari ◽  
Caren D. G. da Silva ◽  
Beatriz F. dos Santos ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Efficient Method ◽  
Recyclable Catalyst ◽  
Reaction Conditions ◽  
Catalyst Synthesis ◽  
Highly Efficient

A highly efficient method for the synthesis of pyrazoles mediated by [Ce(l-Pro)2]2 (Oxa) as a heterogeneous catalyst.

Phosphine free SBA-15–EDTA–Pd highly active recyclable catalyst: synthesis characterization and application for Suzuki and Sonogashira reaction

2014 ◽  
Vol 4 (9) ◽  
pp. 2978-2989 ◽  
Author(s):  
Priti Sharma ◽  
A. P. Singh
Keyword(s):  
Heterogeneous Catalyst ◽  
Recyclable Catalyst ◽  
Sonogashira Reaction ◽  
Reaction Conditions ◽  
Co Catalyst ◽  
Catalyst Synthesis ◽  
Catalyst Free ◽  
Highly Efficient ◽  
Highly Active ◽  
Sonogashira Reactions

SBA-15–EDTA–Pd(11) was demonstrated to be a highly efficient and reusable heterogeneous catalyst for the Suzuki and Sonogashira reactions in phosphine and co-catalyst free reaction conditions.

Copper(II)-Promoted Oxidation/[3+2]Cycloaddition/Aromatization Cascade: Efficient Synthesis of Tetrasubstituted NH-Pyrrole from Chalcones and Iminodiacetates

Synlett ◽  
2019 ◽  
Vol 30 (12) ◽  
pp. 1442-1446 ◽  
Author(s):  
Zhang-qi Lin ◽  
Chao-dong Li ◽  
Zi-chun Zhou ◽  
Shuai Xue ◽  
Jian-rong Gao ◽  
...  
Keyword(s):  
Efficient Method ◽  
Cascade Reaction ◽  
Oxidative Cyclization ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
Highly Efficient ◽  
Wide Range ◽  
Reaction Proceeds

A simple and highly efficient method for the preparation of tetrasubstituted NH-pyrrole from a wide range of chalcones and diethyl iminodiacetates via a Cu(OAc)2-promoted oxidation/[3+2]cycloaddition/aromatization cascade reaction has been developed. This reaction proceeds through dehydrogenations, deamination, and oxidative cyclization, affording the corresponding products in good to excellent yields. This convenient methodology for constructing tetrasubstituted NH-pyrroles has several advantages over existing methods, such as the use of easily accessible chalcones and readily available diethyl iminodiacetates, and mild reaction conditions. A wide range of substrates are tolerated.

scholarly journals Air-stable, recyclable, and time-efficient diphenylphosphinite cellulose-supported palladium nanoparticles as a catalyst for Suzuki–Miyaura reactions

2011 ◽  
Vol 7 ◽  
pp. 378-385 ◽  
Author(s):  
Qingwei Du ◽  
Yiqun Li
Keyword(s):  
Heterogeneous Catalyst ◽  
Palladium Nanoparticles ◽  
Palladium Complex ◽  
Complex Cell ◽  
Reaction Conditions ◽  
Highly Efficient ◽  
Excellent Yield ◽  
Simple Filtration ◽  
Supported Palladium ◽  
Efficient Heterogeneous Catalyst

A diphenylphosphinite cellulose palladium complex (Cell–OPPh2–Pd0) was found to be a highly efficient heterogeneous catalyst for the Suzuki–Miyaura reaction. The products were obtained in good to excellent yield under mild reaction conditions. Moreover, the catalyst could be easily recovered by simple filtration and reused for at least 6 cycles without losing its activity.

Application of highly efficient and reusable H3PW12O40/Fe3O4@SiO2-Pr-Pi nanocatalyst for preparation of dihydro-2-oxypyrrole derivatives

2021 ◽  
Vol 99 (1) ◽  
pp. 72-78
Author(s):  
Shiva Zafari ◽  
Ramin Ghorbani-Vaghei ◽  
Sedigheh Alavinia
Keyword(s):  
Magnetic Nanoparticles ◽  
Ftir Spectroscopy ◽  
Heterogeneous Catalyst ◽  
Environmentally Friendly ◽  
Dimethyl Acetylenedicarboxylate ◽  
Nanostructured Catalyst ◽  
Reaction Conditions ◽  
Highly Efficient ◽  
Magnetically Separable ◽  
Modified Magnetic Nanoparticles

In this study, a novel heterogeneous catalyst (H3PW12O40/Fe3O4@SiO2-Pr-Pi) was prepared via immobilization of H3PW12O40 on the surface of piperidine modified magnetic nanoparticles (Fe3O4@SiO2-Pr-Pi). The synthesis of dihydro-2-oxypyrrole derivatives was carried out by the reaction of substituted aniline, formaldehyde, and dimethyl acetylenedicarboxylate, promoted by H3PW12O40/Fe3O4@SiO2-Pr-Pi in EtOH. The formation of resultant catalyst was confirmed by FTIR spectroscopy, FE-SEM, EDX, VSM, and TGA techniques. The magnetically separable and environmentally friendly nanostructured catalyst remained quite stable during reaction conditions and was reused for at least five recycle runs.

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