Results 121 to 130 of about 119,652 (298)

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

Synthetic Studies Directed Toward Streptenol D: Enantioselective Preparation of the 3,5-diacetoxy-6\u3cem\u3eE\u3c/em\u3e,8\u3cem\u3eE\u3c/em\u3e-decadiene Segment [PDF]

, 1998
The enantioselective preparation of 2-(3′R,5′R-diacetoxy-6E,8E-decadienyl)-1,3-dioxane, (+)-13, is described. This synthesis of the skeleton of streptenol D utilizes the ability of a diene-complexed (tricarbonyl)iron unit to serve as a protecting and ...
Dasgupta, Bireshwar, Donaldson, William
core   +1 more source

Efficient Enantiomeric Selectivity Separation Via Homochiral Graphene Oxide Membrane

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A new type of chiral graphene oxide (GO) membrane is proposed that exhibits a separation factor of up to 20.1 as well as a preferential enantiomer flux of 4.5 mmol m−2 h−1. Moreover, the only first FPLC‐compatible column has been further developed via stacking these chiral GO membranes.
Junbo Wang, Jie Jiang, Weijie Yuan, Zonglin Gu, Fangfang Dai, Binquan Peng, Liuhua Mu, Yanwen Tan, Yusong Tu, Pei Li, Liang Chen   +10 more
wiley   +1 more source

Stereochemical Modulation of Palladacyclopentadienyl Complexes Bearing Diphosphine Ligands: A Key to Enhanced DNA Interaction and Anticancer Activity

European Journal of Inorganic Chemistry, EarlyView.
A modular library of structurally robust palladacyclopentadienyl Pd(II) complexes bearing achiral and chiral diphosphines was developed, revealing a strong influence of diphosphine design and ligand chirality on cytotoxicity and selectivity against ovarian cancer cells, including platinum‐resistant models.
Stefania Mautone, Martina Scianna, Isabella Caligiuri, Laura Orian, Pablo Nogara, Nicola Demitri, Flavio Rizzolio, Thomas Scattolin   +7 more
wiley   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, EarlyView.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Exploring the boundaries of vinylogous Mukaiyama aldol processes: stereoselective access to polyunsaturated homoallylic alcohols [PDF]

, 2013
Catalytic enantioselective vinylogous aldol reactions using extended enolates are of prominent value in synthetic organic chemistry. Here, we report our advances in the development of enantioselective bis-vinylogous and hyper-vinylogous Mukaiyama aldol ...
Battistini, Lucia, Curti, Claudio, Rassu, Gloria Maria Rita, Sartori, Andrea, Zanardi, Franca   +4 more
core  

Emerging Trends in Organic Photoreactions Utilizing Disulfides

European Journal of Organic Chemistry, EarlyView.
Disulfides are versatile, nontoxic alternatives to metal photocatalysts. This review explores their role as photoactivated thiyl‐radical precursors and bifunctional catalysts (HAT/electron shuttling) in diverse transformations. Strategies for electronic tuning and development into recyclable heterogeneous materials are highlighted for sustainable ...
Sunil Kumar, Bolormaa Bayarkhuu, Hong Y. Cho, Jeehye Byun   +3 more
wiley   +1 more source

Is Amino-Acid Homochirality Due To Asymmetric Photolysis In Space? [PDF]

, 1999
Amino acids occurring in proteins are, with rare exceptions, exclusively of the L-configuration. Among the many scenarios put forward to explain the origin of this chiral homogeneity (i.e., homochirality), one involves the asymmetric photolysis of amino ...
Cerf, C., Jorissen, A.
core   +1 more source

Rh-Catalyzed Chemodivergent Parallel Kinetic Resolution and Desymmetrization of Enynes and Dienynes with Acrylamides. [PDF]

Angew Chem Int Ed Engl
Rh‐catalyzed chemodivergent parallel kinetic resolution of racemic 1,6‐enynes with α‐fluoroacrylamides or mixtures of different acrylamides proceeded via [2+2+2] cycloaddition and C–H alkylation to afford structurally and stereochemically distinct products with high selectivity under mild conditions.
Hamada S, Jiang J, Sato Y, Yamazaki T, Maeda S, Tanaka K.   +5 more
europepmc   +2 more sources

Design and Synthesis of Lactose‐Derived Ligands and Their Application in Asymmetric Friedel–Crafts Alkylation

European Journal of Organic Chemistry, EarlyView.
This work describes the synthesis of lactose‐ and glucose‐derived chiral ligands and their application in the catalytic enantioselective Friedel–Crafts alkylation of indole with a series of trans‐β‐nitrostyrenes. The optimal ligand was an acetate protected, lactose‐derived pyridyl imine and its zinc complex afforded ees up to 93% and yields up to 93 ...
Sandra Bulawa, Julia Bruno‐Colmenarez, Patrick J. Guiry   +2 more
wiley   +1 more source