Mechanistic Studies on the pH-Controllable Hydrogenation of NAD+ by H2 and Generation of H2 from NADH by a Water-Soluble Biomimetic Iridium Complex

2012 ◽  
Vol 31 (24) ◽  
pp. 8525-8536 ◽  
Author(s):  
J. Vijaya Sundar ◽  
V. Subramanian
Keyword(s):  
Water Soluble ◽  
Iridium Complex ◽  
Mechanistic Studies

scholarly journals Iridium Complex Catalyzed Hydrogen Production from Glucose and Various Monosaccharides

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 891
Author(s):  
Ken-ichi Fujita ◽  
Takayoshi Inoue ◽  
Toshiki Tanaka ◽  
Jaeyoung Jeong ◽  
Shohichi Furukawa ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Catalytic System ◽  
Catalytic Reaction ◽  
Hydrogen Gas ◽  
Water Soluble ◽  
Starting Material ◽  
Iridium Complex ◽  
Production Of Hydrogen ◽  
Bipyridine Ligand

A new catalytic system has been developed for hydrogen production from various monosaccharides, mainly glucose, as a starting material under reflux conditions in water in the presence of a water-soluble dicationic iridium complex bearing a functional bipyridine ligand. For example, the reaction of D-glucose in water under reflux for 20 h in the presence of [Cp*Ir(6,6′-dihydroxy-2,2′-bipyridine)(H2O)][OTf]2 (1.0 mol %) (Cp*: pentamethylcyclopentadienyl, OTf: trifluoromethanesulfonate) resulted in the production of hydrogen gas in 95% yield. In the present catalytic reaction, it was experimentally suggested that dehydrogenation of the alcoholic moiety at 1-position of glucose proceeded.

Kinetic and Mechanistic Studies on the Reaction of Nitric Oxide with a Water-Soluble Octa-anionic Iron(III) Porphyrin Complex

2005 ◽  
Vol 44 (22) ◽  
pp. 7717-7731 ◽  
Author(s):  
Joo-Eun Jee ◽  
Siegfried Eigler ◽  
Frank Hampel ◽  
Norbert Jux ◽  
Maria Wolak ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Water Soluble ◽  
Mechanistic Studies ◽  
Porphyrin Complex

Mechanistic studies on the decomposition of water soluble azo-radical-initiators

1998 ◽  
pp. 2009-2018 ◽  
Author(s):  
Roy U. Rojas Wahl ◽  
Liansheng Zeng ◽  
Stephen A. Madison ◽  
Richard L. DePinto ◽  
Brian J. Shay
Keyword(s):  
Water Soluble ◽  
Mechanistic Studies ◽  
Radical Initiators ◽  
Decomposition Of Water

The N-alkylation of sulfonamides with alcohols in water catalyzed by a water-soluble metal–ligand bifunctional iridium complex [Cp*Ir(biimH2)(H2O)][OTf]2

2019 ◽  
Vol 43 (27) ◽  
pp. 10755-10762 ◽  
Author(s):  
Yao Ai ◽  
Pengcheng Liu ◽  
Ran Liang ◽  
Yan Liu ◽  
Feng Li
Keyword(s):  
Water Soluble ◽  
Iridium Complex ◽  
Effective Catalyst ◽  
Bridging Ligand ◽  
Highly Effective ◽  
Metal Ligand

A water-soluble dinuclear Cp*Ir complex bearing 4,4′,6,6′-tetrahydroxy-2,2′-bipyrimidine as a bridging ligand was found to be a highly effective catalyst for the N-alkylation of ketones with alcohols in water.

Acceptorless dehydrogenative condensation of o-aminobenzamides with aldehydes to quinazolinones in water catalyzed by a water-soluble iridium complex [Cp*Ir(H2O)3][OTf]2

2015 ◽  
Vol 2 (12) ◽  
pp. 1589-1597 ◽  
Author(s):  
Feng Li ◽  
Lei Lu ◽  
Juan Ma
Keyword(s):  
Water Soluble ◽  
Environmentally Benign ◽  
Iridium Complex

A general, efficient and environmentally benign method for the synthesis of quinazolinones via acceptorless dehydrogenative condensation of o-aminobenzamides with aldehydes in water has been accomplished.

scholarly journals Mechanistic Studies on the Alkylation of Amines with Alcohols Catalyzed by a Bifunctional Iridium Complex

ACS Catalysis ◽  
2015 ◽  
Vol 5 (6) ◽  
pp. 3704-3716 ◽  
Author(s):  
Agnieszka Bartoszewicz ◽  
Greco González Miera ◽  
Rocı́o Marcos ◽  
Per-Ola Norrby ◽  
Belén Martı́n-Matute
Keyword(s):  
Iridium Complex ◽  
Mechanistic Studies

scholarly journals Investigation of the Immunostimulatory Properties of Oxihumate

2003 ◽  
Vol 58 (3-4) ◽  
pp. 263-267 ◽  
Author(s):  
Gisela Käthe Jooné ◽  
Johan Dekker ◽  
Constance Elizabeth Jansen van Rensburg
Keyword(s):  
Proliferative Response ◽  
Bituminous Coal ◽  
Ex Vivo ◽  
Human Lymphocytes ◽  
Water Soluble ◽  
Hiv Positive ◽  
Wet Oxidation ◽  
Mechanistic Studies ◽  
Stimulation Of

A unique process has been developed to convert bituminous coal by controlled wet oxidation followed by base treatment to a water-soluble humate called oxihumate. The effects of oxihumate on the proliferative response of lymphocytes has been studied in vitro and ex vivo. Oxihumate increased the proliferative response of phytohaemagglutinin-stimulated human lymphocytes, from a concentration of 20 μg/ml and upwards. This response was even more striking in the case of lymphocytes from HIV-infected patients and was not limited to the in vitro setting since similar effects were observed ex vivo following administration of a nontoxic dosage of 4 g oxihumate per day to HIV-positive individuals for two weeks. Mechanistic studies revealed that stimulation of the proliferative response of lymphocytes by oxihumate is associated with an increased production of IL-2, as well as expression of the IL-2 receptor in the setting of decreased production of IL-10. Oxihumate therefore holds promise for the treatment of immunocompromized patients.

A water-soluble iridium complex: Highly sensitive to bisulfite and sequential recognition to Cu 2+ ions

2017 ◽  
Vol 78 ◽  
pp. 9-12 ◽  
Author(s):  
Qing Li ◽  
Chaoyi Xie ◽  
Rongqing Zeng ◽  
Xianghong Li ◽  
Dingguo Tang
Keyword(s):  
Water Soluble ◽  
Iridium Complex ◽  
Highly Sensitive ◽  
Sequential Recognition
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