Copper nanoparticles supported on highly nitrogen-rich covalent organic polymers as heterogeneous catalysts for the ipso-hydroxylation of phenyl boronic acid to phenol

2020 ◽  
Vol 44 (16) ◽  
pp. 6222-6231
Author(s):  
Velu Sadhasivam ◽  
Muniyasamy Harikrishnan ◽  
Ganesan Elamathi ◽  
Rajendran Balasaravanan ◽  
Sepperumal Murugesan ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Heterogeneous Catalyst ◽  
Copper Nanoparticles ◽  
Boronic Acid ◽  
Heterogeneous Catalysts ◽  
Phenylboronic Acid ◽  
Organic Polymers ◽  
Atmospheric Conditions ◽  
Phenyl Boronic Acid

Here, we report the synthesis of highly nitrogen-rich covalent organic polymers as a solid heterogeneous catalyst for the oxidation of phenylboronic acid under atmospheric conditions in an aqueous medium to achieve very good yields up to 99%.

scholarly journals Cu2(BDC)2(BPY)–MOF: an efficient and reusable heterogeneous catalyst for the aerobic Chan–Lam coupling prepared via ball-milling strategy

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46022-46027 ◽  
Author(s):  
Armaqan Khosravi ◽  
Javad Mokhtari ◽  
Mohammad Reza Naimi-Jamal ◽  
Sharareh Tahmasebi ◽  
Leila Panahi
Keyword(s):  
Ball Milling ◽  
Heterogeneous Catalyst ◽  
Boronic Acid ◽  
Aromatic Amines ◽  
Cross Coupling ◽  
Phenyl Boronic Acid

Nanoporous Cu2(BDC)2(BPY)–MOF was used as efficient and reusable heterogeneous catalyst to effect the aerobic cross-coupling of aromatic amines and phenyl boronic acid (Chan–Lam Coupling).

scholarly journals Pseudo enantiomeric mixed S/P ligands derived from carbohydrates for the 1,4-addition of phenyl boronic acid to cyclohexenone

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 3041-3047 ◽  
Author(s):  
V. Valdivia ◽  
N. Bilbao ◽  
J. F. Moya ◽  
C. Rosales-Barrios ◽  
A. Salvador ◽  
...  
Keyword(s):  
Boronic Acid ◽  
Phenylboronic Acid ◽  
Good Catalyst ◽  
Phenyl Boronic Acid ◽  
P Ligands

Mixed S/P ligands 3 and 10, good catalyst precursors for the Rh(i)-catalysed 1,4-addition of phenylboronic acid to cyclohexenone behave as enantiomers even though both derived from d-sugars.

Arylboronic Acids in Self-condensation of Glucosamines Forming Deoxyfructosazine, Catalysts or Reagents?

2019 ◽  
Author(s):  
Meifeng Wang ◽  
Gan Zhu ◽  
Yiqun Li ◽  
Liuqun Gu
Keyword(s):  
Molecular Recognition ◽  
Boric Acid ◽  
Boronic Acid ◽  
Catalytic Mechanism ◽  
Organic Transformations ◽  
Food Industries ◽  
Arylboronic Acids ◽  
Excess Amount ◽  
Phenyl Boronic Acid ◽  
Boron Acid

Arylboronic acids were widely used as efficient catalysts in direct amide formation and other organic transformations. Surprisingly, reports on their use as catalysts in carbohydrates synthesis are very rare even though boron acid-diol complexation was extensively investigated in molecular recognition for saccharides and so on. Here we developed an efficient arylboronic acids catalyzed dimerization of glucosamines forming deoxyfructosazine which is important compound in pharmaceutical and food industries, against a commonly held belief that excess amount of phenyl boronic acid (or boric acid) is a must. A catalytic mechanism was also proposed and arylboronic acids instead of their boronates was identified as catalysts.

The Synthesis and Application of Functionalized Mesoporous Silica SBA-15 as Heterogeneous Catalyst in Organic Synthesis

2020 ◽  
Vol 24 ◽  
Author(s):  
Ghodsi Mohammadi Ziarani ◽  
Shima Roshankar ◽  
Fatemeh Mohajer ◽  
Alireza Badiei
Keyword(s):  
Mesoporous Silica ◽  
Heterogeneous Catalyst ◽  
Organic Synthesis ◽  
Lewis Acid ◽  
Heterogeneous Catalysts ◽  
Organic Transformations ◽  
Functionalized Mesoporous Silica ◽  
Silica Nanomaterials ◽  
Wide Range ◽  
Target Molecules

Abstract:: Mesoporous silica nanomaterials provide an extraordinary advantage for making new and superior heterogeneous catalysts because of their surface silanol groups. The functionalized mesoporous SBA-15, such as acidic, basic, BrÖnsted, lewis acid, and chiral catalysts, are used for a wide range of organic synthesis. The importance of the chiral ligands, which were immobilized on the SBA-15, was mentioned in this review to achieve chiral products as valuable target molecules. Herein, their synthesis and application in different organic transformations are reviewed from 2016 till date 2020.

Phosphorus Containing Porous Organic Polymers: Synthetic Techniques and Applications in Organic Synthesis and Catalysis

2021 ◽  
Author(s):  
Pramod Kumar ◽  
Animesh Das ◽  
Biplab Maji
Keyword(s):  
Organic Synthesis ◽  
Homogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Organic Polymer ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Porous Organic Polymer ◽  
Phosphorus Containing

The phosphorous-containing porous organic polymer is a trending material for the synthesis of heterogeneous catalysts. Decades of investigations have established phosphines as versatile ligands in homogeneous catalysis. Recently, phosphine-based heterogeneous...

Cu(I)-Based Metal–Organic Frameworks as Efficient and Recyclable Heterogeneous Catalysts for Aqueous-Medium C–H Oxidation

2018 ◽  
Vol 19 (2) ◽  
pp. 976-982 ◽  
Author(s):  
Kuan Gao ◽  
Chao Huang ◽  
Yisen Yang ◽  
Hong Li ◽  
Jie Wu ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Heterogeneous Catalysts ◽  
Metal Organic Frameworks ◽  
Metal Organic

Effect of Calcination Temperature and Time on Waste Heterogeneous Catalysts for Biodiesel Production

2016 ◽  
Vol 707 ◽  
pp. 161-165 ◽  
Author(s):  
Sarina Sulaiman ◽  
Siti Rohana
Keyword(s):  
Optimum Condition ◽  
Heterogeneous Catalyst ◽  
Calcination Temperature ◽  
Heterogeneous Catalysts ◽  
Fish Bone ◽  
Biodiesel Production ◽  
Calcination Time ◽  
Mixed Waste ◽  
Homogenous Catalyst

This paper studies the effect of calcination time and temperature of mixed waste catalyst for optimization of FAME yield. Fish bone and mixture of coconut waste and eggshells were used to catalyzed the transesterification process. The parameter was tested on different calcination condition and the result shows that the optimum condition was achieved at condition 800 °C, 2 hours was 80.3 wt% of FAME yield for mixed coconut waste and eggshells and 85 wt% were obtained at 900 °C for fish bone catalyst at 225 rpm, 12:1 methanol to oil ratio and amount of catalyst, 3wt%. It can be concluded that waste heterogeneous catalyst exhibits as a cheaper substitute to the homogenous catalyst.

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