scholarly journals A Gallium Hydride as an Oxidizing Agent: Direct Synthesis of IrVComplexes via Ga−H Bond Activation

2017 ◽  
Vol 23 (66) ◽  
pp. 16906-16913 ◽  
Author(s):  
Alexa Caise ◽  
Joseph A. B. Abdalla ◽  
Rémi Tirfoin ◽  
Alison J. Edwards ◽  
Simon Aldridge
Keyword(s):  
Bond Activation ◽  
Direct Synthesis ◽  
Oxidizing Agent ◽  
Gallium Hydride

Cu-catalyzed C–H Activation Reaction: One Pot Direct Synthesis of Xanthine and Uric Acid Derivatives from 5-Bromo Uracil

Synlett ◽  
2021 ◽  
Author(s):  
Habibur Rahaman ◽  
Brindaban Roy ◽  
Somjit Hazra ◽  
Biplab Mondal
Keyword(s):  
Uric Acid ◽  
Bond Activation ◽  
Direct Synthesis ◽  
One Pot ◽  
Activation Reaction

Abstract: A one pot direct synthesis of xanthine and uric acid derivates is reported. This simple yet efficient methodology illustrates concurrent formation of two C-N bonds using CuBr2 as catalyst and one of those C-N bonds is formed by uracil C6-H bond activation.

Pd(ii)-Catalyzed oxidative alkenylation of 4-hydroxycoumarin with maleimide via a C–H bond activation strategy

2021 ◽  
Author(s):  
Kumud Sharma ◽  
Kashmiri Neog ◽  
Abhilash Sharma ◽  
Pranjal Gogoi
Keyword(s):  
Bond Activation ◽  
Direct Synthesis

A Pd(ii)-catalyzed oxidative alkenylation of 4-hydroxycoumarins with maleimides has been developed for the direct synthesis of novel 4-hydroxy-3-maleimidecoumarins without prefunctionalization.

ChemInform Abstract: Direct Synthesis of Pyrazolo[5,1-a]isoindoles via Intramolecular Palladium-Catalyzed C-H Bond Activation.

ChemInform ◽  
2010 ◽  
Vol 42 (3) ◽  
pp. no-no
Author(s):  
Young Lok Choi ◽  
Hyuk Lee ◽  
Bum Tae Kim ◽  
Kihang Choi ◽  
Jung-Nyoung Heo
Keyword(s):  
Bond Activation ◽  
Direct Synthesis ◽  
Palladium Catalyzed

scholarly journals Direct Synthesis of Chalcones from Anilides with Phenyl Vinyl Ketones by Oxidative Coupling Through C–H Bond Activation

ACS Omega ◽  
2018 ◽  
Vol 3 (5) ◽  
pp. 5375-5381 ◽  
Author(s):  
Tomohiro Maegawa ◽  
Ryota Mizui ◽  
Miki Urasaki ◽  
Kazuma Fujimura ◽  
Akira Nakamura ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Bond Activation ◽  
Direct Synthesis ◽  
Phenyl Vinyl

Direct Synthesis of Pyrazolo[5,1‐ a ]isoindoles via Intramolecular Palladium‐Catalyzed CH Bond Activation

2010 ◽  
Vol 352 (11‐12) ◽  
pp. 2041-2049 ◽  
Author(s):  
Young Lok Choi ◽  
Hyuk Lee ◽  
Bum Tae Kim ◽  
Kihang Choi ◽  
Jung‐Nyoung Heo
Keyword(s):  
Bond Activation ◽  
Direct Synthesis ◽  
Palladium Catalyzed

scholarly journals A green and sustainable phosphine-free NHC-ruthenium catalyst for selective oxidation of alcohols to carboxylic acids in water

2015 ◽  
Vol 44 (39) ◽  
pp. 17409-17414 ◽  
Author(s):  
Jagadeesh Malineni ◽  
Helmut Keul ◽  
Martin Möller
Keyword(s):  
Oxygen Atom ◽  
Carboxylic Acids ◽  
Selective Oxidation ◽  
Direct Synthesis ◽  
Ruthenium Catalyst ◽  
Catalytic Dehydrogenation ◽  
Oxidizing Agent ◽  
Primary Alcohols ◽  
Oxidation Of Alcohols ◽  
Atom Source

An efficient novel protocol is applied for direct synthesis of carboxylic acids from primary alcohols through catalytic dehydrogenation. This reaction occurs in water as the solvent and as the oxygen-atom source and no toxic oxidizing agent is involved.

Triple Fixation For Electron Microscopy

1968 ◽  
Vol 26 ◽  
pp. 90-91 ◽  
Author(s):  
M. A. Hayat
Keyword(s):  
Electron Microscopy ◽  
Endoplasmic Reticulum ◽  
Electron Beam ◽  
Plasma Membrane ◽  
Myelin Sheath ◽  
Good Deal ◽  
Granular Structure ◽  
Oxidizing Agent ◽  
Fixation Technique ◽  
Large Clusters

Potassium permanganate has been successfully employed to study membranous structures such as endoplasmic reticulum, Golgi, plastids, plasma membrane and myelin sheath. Since KMnO4 is a strong oxidizing agent, deposition of manganese or its oxides account for some of the observed contrast in the lipoprotein membranes, but a good deal of it is due to the removal of background proteins either by dehydration agents or by volatalization under the electron beam. Tissues fixed with KMnO4 exhibit somewhat granular structure because of the deposition of large clusters of stain molecules. The gross arrangement of membranes can also be modified. Since the aim of a good fixation technique is to preserve satisfactorily the cell as a whole and not the best preservation of only a small part of it, a combination of a mixture of glutaraldehyde and acrolein to obtain general preservation and KMnO4 to enhance contrast was employed to fix plant embryos, green algae and fungi.

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