Employing exchange reactions involving hypervalent iodine compounds for the direct synthesis of azide-containing linear and branched polymers

2014 ◽  
Vol 5 (12) ◽  
pp. 4599-4609 ◽  
Author(s):  
Hongzhang Han ◽  
Nicolay V. Tsarevsky
Keyword(s):  
Ligand Exchange ◽  
Direct Synthesis ◽  
Branched Polymers ◽  
Hypervalent Iodine ◽  
Exchange Reactions ◽  
One Pot ◽  
Iodine Compounds

Azide-containing polymers were prepared by one-pot polymerizations initiated by azide radicals produced by ligand exchange reactions involving hypervalent iodine(iii) compounds.

Some aspects of the formation and structural features of low nuclearity heterometallic carboxylates

2020 ◽  
Vol 92 (7) ◽  
pp. 1093-1110 ◽  
Author(s):  
Aleksey A. Sidorov ◽  
Natalia V. Gogoleva ◽  
Evgeniya S. Bazhina ◽  
Stanislav A. Nikolaevskii ◽  
Maksim A. Shmelev ◽  
...  
Keyword(s):  
Ligand Exchange ◽  
Direct Synthesis ◽  
Molecular Complexes ◽  
Structural Features ◽  
Exchange Reactions ◽  
Metal Core ◽  
Mild Conditions ◽  
Metal Organic ◽  
Heterometallic Carboxylates ◽  
Molecular Compounds

AbstractHeterometallic carboxylate complexes are of paramount interest in pure and applied coordination chemistry. Despite that plurality of such type compounds have been published to date, synthetic aspects of their chemistry often remain in the shadow of intriguing physical properties manifesting by these species. Present review summarizes reliable data on direct synthesis of low nuclearity molecular compounds as well as coordination polymers on their base with carboxylate-bridged {M2Mg} (M = Co2+, Ni2+, Cd2+), {M2Li2} (M = Co2+, Ni2+, Zn2+, VO2+), {M2Ln2} and {M2Ln} (M = Cu2+, Zn2+, Co2+) metal cores. Structural features and stabilization factors are considered and principal outcomes are confirmed by quantum-chemical calculations. Particular attention is paid to consideration of ligand-exchange reactions that allow controllable modification of heterometallic metal core under mild conditions giving diverse molecular complexes with modified ligand environment or Metal-Organic Frameworks with permanent porosity.

scholarly journals Straightforward Strategies for the Preparation of NH-Sulfox­imines: A Serendipitous Story

Synlett ◽  
2017 ◽  
Vol 28 (19) ◽  
pp. 2525-2538 ◽  
Author(s):  
James Bull ◽  
Renzo Luisi ◽  
Leonardo Degennaro
Keyword(s):  
Transition Metal ◽  
Physicochemical Properties ◽  
Direct Synthesis ◽  
Transition Metal Catalysts ◽  
Hypervalent Iodine ◽  
Reaction Conditions ◽  
One Pot ◽  
Metal Free ◽  
Recent Developments ◽  
New Procedures

Sulfoximines are emerging as valuable new isosteres for use in medicinal chemistry, with the potential to modulate physicochemical properties. Recent developments in synthetic strategies have made the unprotected ‘free’ NH-sulfoximine group more readily available, facilitating further study. This account reviews approaches to NH-sulfoximines, with a focus on our contribution to the field. Starting from the development of catalytic strategies involving transition metals, more sustainable metal-free processes have been discovered. In particular, the use of hypervalent iodine reagents to mediate NH-transfer to sulfoxides is described, along with an assessment of the substrate scope. Furthermore, a one-pot strategy to convert sulfides directly into NH-sulfoximines is discussed, with N- and O-transfer occurring under the reaction conditions. Mechanistic evidence for the new procedures is included as well as relevant synthetic applications that further exemplify the potential of these approaches.1 Introduction2 Strategies to Form NH-Sulfoximines Involving Transition-Metal Catalysts3 Metal-Free Strategies to Prepare NH-Sulfoximines4 Mechanistic Evidence for the Direct Synthesis of NH-Sulfoximines from Sulfoxides and Sulfides5 Further Applications6 Conclusion

One-pot synthesis of self-assembled heteroleptic palladium(II) complexes with tmeda: An application of ligand exchange reactions

2014 ◽  
Vol 39 ◽  
pp. 75-78 ◽  
Author(s):  
Sreenivasulu Bandi ◽  
Niladri Bihari Debata ◽  
Venkatachalam Ramkumar ◽  
Dillip Kumar Chand
Keyword(s):  
Ligand Exchange ◽  
Exchange Reactions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Self Assembled

scholarly journals One-pot Synthesis of Unsymmetrical Diaryliodonium Tetrafluoroborate Salts Bearing an Isoxazole Moiety from Aryl Boronic Acids

2019 ◽  
Vol 7 (4.14) ◽  
pp. 158
Author(s):  
M A.F. Abdul Manan ◽  
D B. Cordes ◽  
A M.Z. Slawin ◽  
D O’Hagan
Keyword(s):  
Organic Synthesis ◽  
Low Cost ◽  
Boronic Acids ◽  
Environmentally Benign ◽  
Hypervalent Iodine ◽  
Synthetic Method ◽  
One Pot ◽  
Toxic Heavy Metal ◽  
Organometallic Catalysts ◽  
Iodine Compounds

Hypervalent iodine compounds exhibit attractive features of low cost, mild and selective reagents in organic synthesis. These reagents serve as environmentally benign alternatives to toxic heavy-metal based oxidants and expensive organometallic catalysts. The practical and simple synthesis of unsymmetrical diaryl iodonium tetrafluoroborate salts is described. This synthetic method has allowed the production of isoxazole tetrafluoroborate salts from readily available aryl boronic acids without an extra anion exchange step in acceptable yields of 45% and 50%. 

Hypervalent iodine-based dynamic and self-healing network polymers

2019 ◽  
Vol 10 (29) ◽  
pp. 3943-3950 ◽  
Author(s):  
Avichal Vaish ◽  
Nicolay V. Tsarevsky
Keyword(s):  
Ligand Exchange ◽  
Uv Light ◽  
Hypervalent Iodine ◽  
Self Healing ◽  
Linear Polymers ◽  
Exchange Reactions ◽  
Network Polymers ◽  
Radical Coupling

Linear polymers with carboxylate pendant groups participate in ligand-exchange reactions with (diacetoxyiodo)benzene to afford dynamic and self-healing networks, which become set when exposed to UV light or heat due to irreversible radical coupling.

Voltammetric Studies of Some Novel Fe(III) Complexes with Quadridentate Ligands. The Axial Ligand-Exchange Reactions in DMF and DMSO

1995 ◽  
Vol 60 (7) ◽  
pp. 1140-1157 ◽  
Author(s):  
Ljiljana S. Jovanovic ◽  
Luka J. Bjelica
Keyword(s):  
Oxidation State ◽  
Chemical Reactions ◽  
Ligand Exchange ◽  
Kinetic Data ◽  
Central Atom ◽  
Axial Ligand ◽  
Exchange Reactions ◽  
Ligand Effect ◽  
Condensation Products ◽  
Voltammetric Studies

The electrochemistry of four novel Fe(III) complexes of the type [Fe(L)Cl], involving quadridentate ligands based on the condensation products of benzoylacetone-S-methylisothiosemicarbazone with salicylaldehyde, 5-chlorosalicylaldehyde, 3,5-dichlorosalicylaldehyde or 5-nitrosalicylaldehyde, was studied in DMF and DMSO at a GC electrode. All complexes undergo a two-step one-electron reductions, usually complicated by chemical reactions. In solutions containing Cl-, the ligand-exchange reactions Cl--DMF and Cl--DMSO take place. Stability of the chloride-containing complexes was discussed in terms of the coordinated ligand effect, oxidation state of the central atom and, in particular, of the donor effect of the solvent. Some relevant kinetic data were calculated.

scholarly journals Practical Synthesis of 2-Iodosobenzoic Acid (IBA) without Contamination by Hazardous 2-Iodoxybenzoic Acid (IBX) under Mild Conditions

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1897
Author(s):  
Hideyasu China ◽  
Nami Kageyama ◽  
Hotaka Yatabe ◽  
Naoko Takenaga ◽  
Toshifumi Dohi
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Practical Method ◽  
Hypervalent Iodine ◽  
Mild Conditions ◽  
Sequential Procedures ◽  
Iodine Compounds ◽  
Practical Synthesis ◽  
Iodosobenzoic Acid ◽  
Lower Temperature

We report a convenient and practical method for the preparation of nonexplosive cyclic hypervalent iodine(III) oxidants as efficient organocatalysts and reagents for various reactions using Oxone® in aqueous solution under mild conditions at room temperature. The thus obtained 2-iodosobenzoic acids (IBAs) could be used as precursors of other cyclic organoiodine(III) derivatives by the solvolytic derivatization of the hydroxy group under mild conditions of 80 °C or lower temperature. These sequential procedures are highly reliable to selectively afford cyclic hypervalent iodine compounds in excellent yields without contamination by hazardous pentavalent iodine(III) compound.

One-pot synthesis of cyclohexylamine and N-aryl pyrroles via hydrogenation of nitroarenes over the Pd0.5Ru0.5-PVP catalyst

2021 ◽  
Author(s):  
Chandan Chaudhari ◽  
Katsutoshi Sato ◽  
Yasuyuki Ikeda ◽  
Kenji Terada ◽  
Naoya Abe ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
One Pot ◽  
One Pot Synthesis

The direct synthesis of cyclohexylamine via hydrogenation of nitrobenzene over monometallic (Pd, Ru or Rh) and bimetallic (PdxRu1−x) catalysts was studied.

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