63242-16-0Relevant academic research and scientific papers
Silica tethered Pd-DABCO complex: An efficient and reusable catalyst for suzuki-miyaura reaction
Kumbhar, Arjun,Kamble, Santosh,Jadhav, Sanjay,Rashinkar, Gajanan,Salunkhe, Rajashri
, p. 1388 - 1396 (2012)
A palladium-based catalyst supported on DABCO-functionalized silica was successfully prepared by a facile procedure. The prepared heterogeneous catalyst showed a high activity for the Suzuki-Miyaura reaction of aryl bromides, affording excellent yield in all the cases investigated. Interestingly, the catalyst could be quantitatively recovered from the reaction mixture and recycled for five times without any significant loss in activity. Furthermore, this protocol could be extended to the palladium catalyzed synthesis of annulated pyrazines. Springer Science+Business Media, LLC 2012.
Biogenic synthesis of palladium nanoparticles using Boswellia sarrata and their applications in cross-coupling reactions
Arde, Satyanarayan M.,Rashinkar, Gajanan S.,Jadhav, Sanjay N.,Patil, Audumbar D.,Salunkhe, Rajashri S.
, (2020/10/02)
A facile and green route for biogenic synthesis of palladium nanoparticles (PdNPs) using aqueous extract of nontoxic and renewable Boswellia sarrata leaves is reported. The as-synthesized PdNPs were systematically characterized by using ultraviolet (UV)–visible spectroscopy, X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The PdNPs were crystalline and cubic in nature with average particle size of ~6 nm and successfully employed as heterogeneous catalyst in the Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions. The PdNPs could be recycled up to five times with modest change in the catalytic activity.
Ligand-free Pd catalyzed cross-coupling reactions in an aqueous hydrotropic medium
Jadhav, Sanjay N.,Kumbhar, Arjun S.,Rode, Chadrashekhar V.,Salunkhe, Rajashri S.
supporting information, p. 1898 - 1911 (2016/04/19)
A simple, efficient and ligand-free protocol for the Suzuki-Miyaura reaction and base-free Heck-Matsuda reactions under mild reaction conditions have been developed over palladium supported on activated carbon (Pd/C) in an aqueous hydrotropic solution. The catalyst Pd/C was fully characterized by TG-DTA, SEM, EDS, XRD, XPS, BET and ICP-AES analyses. This green methodology represents a cost-effective and operationally convenient method for the synthesis of a variety of biaryls, prochiral ketones, and acrylates under the conditions that are tolerant for a broad range of functional groups with good to excellent yields. The developed Pd/C-aqueous hydrotrope combined catalytic system is well suited for the 3R approach (reducible, robust, and recyclable) for different cross-coupling reactions without an appreciable loss of its activity.
Palladium supported on silica-chitosan hybrid material (Pd-CS@SiO2) for Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions
Jadhav, Sanjay,Kumbhar, Arjun,Salunkhe, Rajashri
, p. 339 - 345 (2015/06/02)
Palladium supported on silica-chitosan hybrid material was prepared and characterized using thermogravimetric and differential thermogravimetric analyses, scanning electron microscopy, and Fourier transform infrared, energy-dispersive X-ray and X-ray photoelectron spectroscopies. The prepared Pd-CS@SiO2 catalyst (1 mol%) was used for the Suzuki-Miyaura cross-coupling reaction of various aryl halides and arylboronic acids in 95% ethanol at 80 °C and the Mizoroki-Heck reaction in dimethylformamide at 110 °C using K2CO3 as a base. The developed catalyst is well suitable for the 3R approach (recoverable, robust, recyclable) for cross-coupling reactions without appreciable loss of its activity.
Palladium supported hybrid cellulose-aluminum oxide composite for Suzuki-Miyaura cross coupling reaction
Kumbhar, Arjun,Jadhav, Sanjay,Kamble, Santosh,Rashinkar, Gajanan,Salunkhe, Rajashri
, p. 1331 - 1337 (2013/05/08)
A cellulose-aluminum oxide composite was prepared and modified with organo-functional groups by reacting with the coupling reagent (CH 3O)3Si(CH2)3NH2 through Al-O-Si bonds. The amino groups confined in the composite were found to be efficient for palladium entrapment, leading to a highly active and reusable heterogeneous catalyst (Pd@Al2O3-CELL) for Suzuki-Miyaura cross coupling reaction in water and H2O/DMF (8:2) mixture at 80 °C. Copyright
Gel-entrapped bases: A smart window for the ligand-free Suzuki-Miyaura cross-coupling reaction
Jadhav, Sanjay,Kumbhar, Arjun,Kamble, Santosh,More, Pallavi,Salunkhe, Rajashri
, p. 957 - 961 (2013/11/06)
A gel-entrapped base has been fabricated by using agarose (biopolymer), and tested in the Suzuki-Miyaura cross-coupling reaction in 95% ethanol. The developed environmentally benign polymer-supported base has low leaching and high stability for the Suzuki-Miyaura cross-coupling reaction to give high yield with green credit.
