ChemInform Abstract: 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.

ChemInform ◽  
2016 ◽  
Vol 47 (14) ◽  
Author(s):  
Feng Li ◽  
Lei Lu ◽  
Juan Ma
Keyword(s):  
Water Soluble ◽  
Iridium Complex

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.

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.

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

scholarly journals Dehydrogenative Transformation of Alcoholic Substrates in Aqueous Media Catalyzed by an Iridium Complex Having a Functional Ligand with α-Hydroxypyridine and 4,5-Dihydro-1H-imidazol-2-yl Moieties

Catalysts ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 312 ◽  
Author(s):  
Masato Yoshida ◽  
Han Wang ◽  
Takuya Shimbayashi ◽  
Ken-ichi Fujita
Keyword(s):  
Catalytic System ◽  
Aqueous Media ◽  
Catalytic Performance ◽  
Water Soluble ◽  
Iridium Complex ◽  
Similar Reaction ◽  
Reaction Conditions ◽  
System A ◽  
Iridium Catalyst ◽  
Oxidation Of Alcohols

A new catalytic system that employs water as an environmentally friendly solvent for the dehydrogenative oxidation of alcohols and lactonization of diols has been developed. In this catalytic system, a water-soluble dicationic iridium complex having a functional ligand that comprises α-hydroxypyridine and 4,5-dihydro-1H-imidazol-2-yl moieties exhibits high catalytic performance. For example, the catalytic dehydrogenative oxidation of 1-phenylethanol in the presence of 0.25 mol % of the iridium catalyst and base under reflux in water proceeded to give acetophenone in 92% yield. Additionally, under similar reaction conditions, the iridium-catalyzed dehydrogenative lactonization of 1,2-benzenedimethanol gave phthalide in 98% yield.

Dehydrogenative Oxidation of Alcohols in Aqueous Media Catalyzed by a Water-Soluble Dicationic Iridium Complex Bearing a Functional N-Heterocyclic Carbene Ligand without Using Base

ACS Catalysis ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 7226-7230 ◽  
Author(s):  
Ken-ichi Fujita ◽  
Ryuichi Tamura ◽  
Yuhi Tanaka ◽  
Masato Yoshida ◽  
Mitsuki Onoda ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Water Soluble ◽  
Iridium Complex ◽  
Oxidation Of Alcohols

Rearrangement of aldoximes to amides in water under air atmosphere catalyzed by water-soluble iridium complex [Cp*Ir(H2O)3][OTf]2

2014 ◽  
Vol 4 (4) ◽  
pp. 988-996 ◽  
Author(s):  
Chunlou Sun ◽  
Panpan Qu ◽  
Feng Li
Keyword(s):  
Water Soluble ◽  
Iridium Complex ◽  
Air Atmosphere ◽  
Ligand Free ◽  
Aliphatic Group

R = aryl or aliphatic group phosphorous ligand-free low catalytic loading under air atmosphere up to 93% yield; 37 examples.

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