Silver Salt Enabled H/D Exchange at β Position of Thiophene Rings: Synthesis of Fully Deuterated Thiophene derivatives

Organic & Biomolecular Chemistry ◽

10.1039/d1ob02285g ◽

2022 ◽

Author(s):

Fei-fei Sheng ◽

En-Ci Li ◽

Jing-Wen Bai ◽

Cai-Xia Wang ◽

Guang-Qi Hu ◽

...

Keyword(s):

Exchange Reaction ◽

Silver Salt ◽

Deuterium Atom ◽

Thiophene Derivatives

We disclose a silver catalyzed H/D exchange reaction, which can introduce deuterium atom at β position of thiophene rings without the assisstance of any coordinating groups. The advantages of this...

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The exchange reaction between ethylene and deuterium on a nickel catalyst

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1939.0053 ◽

1939 ◽

Vol 171 (944) ◽

pp. 55-69 ◽

Cited By ~ 37

Keyword(s):

Hydrogen Atom ◽

Gas Phase ◽

Exchange Reaction ◽

Nickel Catalyst ◽

Addition Reaction ◽

Deuterium Atom ◽

Atomic Mechanism

It was shown that, when deuterium and ethylene are passed over a nickel catalyst, in addition to the formation of deuterium substituted ethanes, an exchange reaction which may be formulated C 2 H 4 + D 2 ⇄ C 2 H 3 D + HD takes place (Farkas, Farkas and Rideal 1934). Horiuti and Polanyi (1934) pointed out that if the exchange reaction involved atoms, and the addition reaction molecules of hydrogen, the two reactions should differ in their kinetics; this inference is only true under those conditions where the rate-controlling mechanisms involve those species in concentrations in equilibrium with the gas phase. It was found that the two reactions differed at least in respect to their relative energies of activation. If the exchange reaction involves an atomic mechanism, this can be formulated in two different ways (Horiuti and Polanyi 1934), either a primary addition of a deuterium atom, or a primary loss of hydrogen atom may take place, the respective reactions being represented diagrammatically as follows:

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Pyridyl disulfide-based thiol–disulfide exchange reaction: shaping the design of redox-responsive polymeric materials

Polymer Chemistry ◽

10.1039/d0py01215g ◽

2020 ◽

Vol 11 (48) ◽

pp. 7603-7624

Author(s):

Ismail Altinbasak ◽

Mehmet Arslan ◽

Rana Sanyal ◽

Amitav Sanyal

Keyword(s):

Exchange Reaction ◽

Functional Materials ◽

Polymeric Materials ◽

Disulfide Exchange ◽

Redox Responsive ◽

Synthetic Approaches

This review provides an overview of synthetic approaches utilized to incorporate the thiol-reactive pyridyl-disulfide motif into various polymeric materials, and briefly highlights its utilization to obtain functional materials.

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Evaluation of the hemostatic effect of a 1% solution of an incomplete silver salt of polyacrylic acid during antiglaucomatous operations in patients with primary open-angle glaucoma and type 2 diabetes mellitus

Modern technologies in ophtalmology ◽

10.25276/2312-4911-2019-1-444-446 ◽

2019 ◽

pp. 444-446

Author(s):

N.S. Khodzhaev ◽

◽

A.V. Sidorova ◽

H.S. Husanbaev ◽

M.A. Eliseeva ◽

...

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Type 2 Diabetes Mellitus ◽

Polyacrylic Acid ◽

Primary Open Angle Glaucoma ◽

Silver Salt ◽

Open Angle Glaucoma ◽

Open Angle ◽

Hemostatic Effect

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Photoassisted Production of O2-• and H2 in Aqueous Medium Stimulated by Polythiophene in ZSM-5 Zeolite Channels

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19990149 ◽

1999 ◽

Vol 64 (1) ◽

pp. 149-156 ◽

Cited By ~ 7

Author(s):

Gabriel Čík ◽

František Šeršeň ◽

Alena Bumbálová

Keyword(s):

Reactive Oxygen Species ◽

Ion Exchange ◽

Visible Light ◽

Aqueous Medium ◽

Exchange Reaction ◽

Epr Spectroscopy ◽

Reactive Oxygen ◽

Oxygen Species ◽

Water Reduction ◽

Ion Exchange Reaction

The formation of reactive oxygen species due to irradiation by a visible light of the polythiophene deposited in ZSM-5 zeolite channels in aqueous medium has been studied. Polymerization of thiophene was carried out in zeolite channels after the ion-exchange reaction of Na+ for Fe3+. By means of EPR spectroscopy, the temporarily generated 1O2 in irradiated aqueous medium was proved. The formation of O2-• was confirmed by the reduction of Fe3+-cytochrome c. Irradiation led to the water reduction to hydrogen.

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