Results 81 to 90 of about 12,531 (256)

Enantioconvergent catalysis

Beilstein Journal of Organic Chemistry, 2016
An enantioconvergent catalytic process has the potential to convert a racemic starting material to a single highly enantioenriched product with a maximum yield of 100%.
Justin T. Mohr, Jared T. Moore, Brian M. Stoltz   +2 more
doaj   +1 more source

Strain Release of 1‐Azabicyclo[1.1.0]butanes as a Gateway to Highly Functionalized Azetidines: New Strategies and Structural Motifs

Chemistry – A European Journal, EarlyView.
Over the past decade, the interest in azetidines has continuously risen, by virtue of their highly appealing pharmaceutical properties. Monocyclic, spirocyclic, and bridged azetidines can be accessed by leveraging 1‐azabicyclo[1.1.0]butanes as precursors.
Yuri Gelato, Philipp Natho, Marco Colella, Renzo Luisi   +3 more
wiley   +1 more source

Stereoselective Higher‐Order [10+4]‐ and [10+6] Cycloadditions Between Two Highly Unsaturated and Ambiphilic π‐Addends

Chemistry – A European Journal, EarlyView.
Aminocatalytically generated isobenzofulvenes and 3‐oxidopyridinium betaines act as ambiphilic reaction partners in orbital‐symmetry‐allowed [10+4] cycloadditions or formally symmetry‐forbidden concerted thermal [10+6] cycloadditions. The reaction furnishes three cycloadducts: one [10+4] cycloadduct and two regioisomeric [10+6] cycloadducts.
Jonas Faghtmann, Anne Kristensen, Fabien Fritz, Signe Sofie Pladsbjerg Andresen, Anne Rask Østergaard, Johannes Nygaard Lamhauge, K. N. Houk, Karl Anker Jørgensen   +7 more
wiley   +1 more source

Stereoselective Phosphorylation of d-Ribose as a Driver of Life’s Homochirality

Life
Life demonstrates remarkable homochirality of its major building blocks: nucleic acids, amino acids, sugars, and phospholipids. Phospholipid bilayer vesicles (liposomes) are formed at the water/air interface from Langmuir layers and contain ribose, a ...
Vladimir M. Subbotin, Gennady Fiksel
doaj   +1 more source

In situ Generation of Fluoride Catalysts for CO2‐to‐Formic Acid Conversion With Silicon Reducing Agent

Chemistry – A European Journal, EarlyView.
Reductive conversion of CO2 to formic acid with waste silicon reducing agent catalyzed by in situ generation of active fluoride species from a tertiary amine, protonic acid, and simple inorganic fluoride salt, such as KF and NaF. ABSTRACT The activation and catalytic reduction of carbon dioxide (CO2) using silicon‐based reducing agents is an important ...
S. M. A. Hakim Siddiki, Yusuke Tanimura, Mariko Honda, Shingo Hasegawa, Kazuo Namba, Yuichi Manaka, Ken Motokura   +6 more
wiley   +1 more source

Assessing Benzene Dimer Interactions in Solution With a Molecular Balance

Chemistry – A European Journal, EarlyView.
The Gecko in the ToC was generated with Canva (31.03.2025 11:00 pm), the remaining graphics by the authors. ABSTRACT We present a combined experimental and computational study of a 1,4/1,6‐dibenzyl substituted cyclooctatetraene (COT)‐based molecular balance as a model to assess the benzene dimer interactions in solution.
Marvin H. J. Domanski, Michael Fuhrmann, Nils F. Hacket, Heike Hausmann, Peter R. Schreiner   +4 more
wiley   +1 more source

Covalent Insertion of a Mn(Salen) Type Complex in Cross‐Linked Protein Crystals: Design of an Enantioselective Artificial Epoxidase

Chemistry – A European Journal, EarlyView.
An Artificial metalloenzyme was designed by a Michael addition between a MnSalen complex and a cysteine residue within NikA crystals. The heterogeneous catalyst was found capable of an enantioselective and stereospecific epoxidation of cis‐β‐methylstyrene in cristallo.
Manel Boukhallat, Ismail Benhamed, Jade Arnone, Stann Van Baaren, Clara Rinaldi, Patrice Catty, Caroline Marchi‐Delapierre, Christine Cavazza, Stéphane Ménage   +8 more
wiley   +1 more source

Enantioselectivity in Vanadium-Dependent Haloperoxidases of Different Marine Sources for Sulfide Oxidation to Sulfoxides

Marine Drugs
This study explores the reasons behind the variations in the enantioselectivity of the sulfoxidation of methyl phenyl sulfide by marine-derived vanadium-dependent haloperoxidases (VHPOs). Twelve new VHPOs of marine organisms were overexpressed, purified,
Yun-Han Zhang, Ya-Ting Zou, Yong-Yi Zeng, Lan Liu, Bi-Shuang Chen   +4 more
doaj   +1 more source

Titanium‐Catalyzed Diastereoselective Keto‐ and Iminonitrile Cyclizations

Chemistry – A European Journal, EarlyView.
The titanium(III)‐catalyzed diastereoselective cyclization of readily‐available substituted ketonitriles gives cyclopentanones in good yield and stereoselectivity. Subsequent 1,2‐addition allows the preparation of cyclopentyls with three consecutive stereocenters.
Christoph Kern, Ritu Singh, Michael A. Unkrig‐Bau, Lukas Jakob, Jan Streuff   +4 more
wiley   +1 more source

Catalytic Enantioselective Syntheses of Sulfinamidines From Sulfenamides

ChemistryEurope
Sulfinamidines are sulfur(IV) functional groups with significant medicinal potential and serve as versatile intermediates toward sulfur(VI) motifs, which are also of heightened pharmaceutical interest.
Fumito Saito
doaj   +1 more source