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.

The α-alkylation of ketones with alcohols in pure water catalyzed by a water-soluble Cp*Ir complex bearing a functional ligand

2019 ◽  
Vol 43 (35) ◽  
pp. 14057-14065 ◽  
Author(s):  
Chong Meng ◽  
Jing Xu ◽  
Yawen Tang ◽  
Yao Ai ◽  
Feng Li
Keyword(s):  
Pure Water ◽  
Water Soluble ◽  
Effective Catalyst ◽  
Bridging Ligand ◽  
Highly Effective

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 α-alkylation of ketones with alcohols in water.

l-Prolinal Dithioacetal: A Highly Effective Organocatalyst for the Direct Nitro-Michael Addition to Selected Cyclic and Aromatic Ketones

Synthesis ◽  
2019 ◽  
Vol 51 (17) ◽  
pp. 3356-3368
Author(s):  
Piotr Pomarański ◽  
Zbigniew Czarnocki
Keyword(s):  
Michael Addition ◽  
Ring Size ◽  
Cyclic Ketones ◽  
Asymmetric Syntheses ◽  
Aromatic Ketones ◽  
Ring Systems ◽  
Effective Catalyst ◽  
Acetophenone Derivatives ◽  
Highly Effective ◽  
Related Compounds

The synthesis of novel l-prolinal dithioacetal and its application as an organocatalyst for the direct Michael addition of cyclic ketones and acetophenone derivatives to trans-β-nitrostyrene and related compounds is described. The prolinal dithioacetal acts as effective catalyst in the case of cyclic ketones of different ring size, in particular five- and six-membered examples, as well as larger and smaller ring systems. High enantioselectivity and diastereoselectivity is observed for different substrates and trans-β-nitrostyrenes. Also, the first asymmetric syntheses of selected 2-methyl-4-nitro-1,3-diphenylbutan-1-one derivatives by application of the obtained organocatalyst is presented.

Cross β-alkylation of primary alcohols catalysed by DMF-stabilized iridium nanoparticles

2021 ◽  
Author(s):  
Masaki Kobayashi ◽  
Hiroki Yamaguchi ◽  
Takeyuki Suzuki ◽  
Yasushi Obora
Keyword(s):  
Primary Alcohols ◽  
Recycling Process ◽  
Catalyst Recycling ◽  
Simple Method ◽  
Benzyl Alcohols ◽  
Effective Catalyst ◽  
Iridium Nanoparticles ◽  
Highly Effective ◽  
Linear Alcohols ◽  
The Cross

A simple method for the cross β-alkylation of linear alcohols with benzyl alcohols in the presence of DMF-stabilized iridium nanoparticles was developed. Furthermore, a highly effective catalyst-recycling process was also developed.

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.

Highly Effective Catalyst for the Reaction of Trialkylphosphites with C˭X Electrophiles

2011 ◽  
Vol 186 (4) ◽  
pp. 796-798 ◽  
Author(s):  
Olga O. Kolodiazhna ◽  
Anastasia O. Kolodiazhna ◽  
Oleg I. Kolodiazhnyi
Keyword(s):  
Effective Catalyst ◽  
Highly Effective

Highly Effective, Water-Soluble, Hemocompatible 1,3-Propylene Oxide-Based Antimicrobials: Poly[(3,3-quaternary/PEG)-copolyoxetanes]

2011 ◽  
Vol 12 (3) ◽  
pp. 757-769 ◽  
Author(s):  
Souvik Chakrabarty ◽  
Allison King ◽  
Pinar Kurt ◽  
Wei Zhang ◽  
Dennis E. Ohman ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Water Soluble ◽  
Highly Effective ◽  
Effective Water

Pd-PEPPSI-IPentCl: A Highly Effective Catalyst for the Selective Cross-Coupling of Secondary Organozinc Reagents

2012 ◽  
Vol 51 (45) ◽  
pp. 11354-11357 ◽  
Author(s):  
Matthew Pompeo ◽  
Robert D. J. Froese ◽  
Niloufar Hadei ◽  
Michael G. Organ
Keyword(s):  
Cross Coupling ◽  
Effective Catalyst ◽  
Highly Effective ◽  
Organozinc Reagents

Ethylenediamine: A Highly Effective Catalyst for One-Pot Synthesis of Aryl Nitroalkenes via Henry Reaction and Dehydration

2012 ◽  
Vol 30 (12) ◽  
pp. 2827-2833 ◽  
Author(s):  
Jianxin Yang ◽  
Jing Dong ◽  
Xia Lü ◽  
Qiang Zhang ◽  
Wei Ding ◽  
...  
Keyword(s):  
Henry Reaction ◽  
One Pot ◽  
Effective Catalyst ◽  
One Pot Synthesis ◽  
Highly Effective
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