J. Appl. Cryst.の発刊に際して

The Golden Age of Transfer Hydrogenation

Catalytic activities of Schiff base transition metal complexes

Asymmetric transfer hydrogenation has become a practically useful tool in reduction chemistry in the last decade or so. This was largely triggered by the seminal work of Noyori and co-workers in the mid-1990s and is driven by its complementing chemistry to hydrogenation employing H2. This Focus Review attempts to present a “holistic” overview on the advances in the area, focusing on the achievements recorded around the last three years. These include more-efficient and “greener” metal catalysts, catalysts that enable hydrogenation as well as transfer hydrogenation, biomimetic and organocatalysts, and their applications in the reduction of CO, CN, and CC bonds. Also highlighted are efforts in the development of environmentally benign and reusable catalytic systems.

Broader, Greener, and More Efficient: Recent Advances in Asymmetric Transfer Hydrogenation

1.2.2. Davis Oxaziridines 4305 1.2.3. Metal Complexes in Enantioselective Oxidation 4305 1.3. New Applications 4307 1.3.1. Chiral Sulfinate Method 4307 1.3.2. Oxidation with Chiral Oxaziridines 4309 1.3.3. Oxidation Using Metal Complexes 4310 1.4. New Systems 4313 1.4.1. C-S Bond Formation 4314 1.4.2. Organic Oxidants 4315 1.4.3. Oxidations Catalyzed by Metal Complexes 4316 1.5. Diastereoselective Oxidations 4330 1.6. Heterogenized Systems 4332 1.7. Summary 4335 2. Biological Oxidations 4336 2.

Enantioselective synthesis of sulfoxides: 2000-2009.

Structure/Enantioselectivity Study of the Asymmetric Addition of Trimethylsilylcyanide to Benzaldehyde Catalyzed by Ti(IV)−Schiff Base Complexes

New heterogenized C2-symmetric bis(sulfonamide)-cyclohexane-1,2-diamine-RhIIICp∗ complexes and their application in the asymmetric transfer hydrogenation (ATH) of ketones in water

A series of aromatic monosulfonamide ligands derived from (1 R ,2 R )-diaminocyclohexane were synthesized with electron withdrawing and donating groups. These were complexed with Rh(Cp ∗ ) or Ru(arene) and their catalytic efficiencies were compared in the ATH of acetophenone using sodium formate/water or isopropanol/KOH as the hydrogen source. Results suggest that substituents on the benzene ring of the sulfonamide have very little electronic impact on the enantioselectivity and mechanism of the reaction.

Ruthenium(II) and rhodium(III) catalyzed asymmetric transfer hydrogenation (ATH) of acetophenone in isopropanol and in aqueous sodium formate using new chiral substituted aromatic monosulfonamide ligands derived from (1R,2R)-diaminocyclohexane

Miguel Parra-Hake

Papers

Structure/Enantioselectivity Study of the Asymmetric Addition of Trimethylsilylcyanide to Benzaldehyde Catalyzed by Ti(IV)−Schiff Base Complexes

New heterogenized C2-symmetric bis(sulfonamide)-cyclohexane-1,2-diamine-RhIIICp∗ complexes and their application in the asymmetric transfer hydrogenation (ATH) of ketones in water

Ruthenium(II) and rhodium(III) catalyzed asymmetric transfer hydrogenation (ATH) of acetophenone in isopropanol and in aqueous sodium formate using new chiral substituted aromatic monosulfonamide ligands derived from (1R,2R)-diaminocyclohexane

New chiral Schiff base-Cu(II) complexes as cyclopropanation catalysts

Bifunctional Organocatalysts in the Asymmetric Michael Additions of Carbonylic Compounds to Nitroalkenes