Results 81 to 90 of about 10,876 (228)

Enantioselective Reductions Promoted by (Cyclopentadienone)iron Complexes

CHIMIA, 2017
(Cyclopentadienone)iron complexes have recently gained widespread interest as cheap metal-based pre-catalysts for the reduction of carbonyl compounds and imines, thanks to their air- and moisture-stability and easy synthesis/purification.
Umberto Piarulli, Sofia Vailati Fachini, Luca Pignataro   +2 more
doaj   +1 more source

Enantioselective Prins cyclization: BINOL-derived phosphoric acid and CuCl synergistic catalysis.

, 2014
International audienceThe first catalytic enantioselective Prins cyclization is disclosed. The reaction is catalyzed by the combination of a chiral BINOL-derived bis-phosphoric acid and CuCl.
Lalli, Claudia, Van De Weghe, Pierre
core   +3 more sources

Catalytic Enantioselective Synthesis of Tetrahydocarbazoles and Exocyclic Pictet-Spengler-Type Reactions [PDF]

, 2016
A synthetic strategy for the synthesis of chiral tetrahydrocarbazoles (THCAs) has been developed. The strategy relies on two types of 6-exo-trig cyclization of 3-substituted indole substrates.
Ascic, Erhad, Hansen, Casper Lykke, Nielsen, Thomas Eiland, Ohm, Ragnhild Gaard, Olsen, Lasse Bohn, Tanner, David Ackland   +5 more
core   +2 more sources

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

1,3-Dipolar cycloadditions of azomethine imines [PDF]

, 2015
Azomethine imines are considered 1,3-dipoles of the aza-allyl type which are transient intermediates and should be generated in situ but can also be stable and isolable compounds.
Nájera, Carmen, Sansano, Jose M., Yus, Miguel   +2 more
core   +3 more sources

State‐of‐the‐Art and Synthetic Challenges for Hydrosilane Production

Chemistry – A European Journal, EarlyView.
The synthesis of hydrosilanes is currently energy intensive and their recycling is not considered. However, these compounds are important in many industrial fields but also for the valorization of oxygenated waste, towards a circular economy. This review compares the available synthetic routes and highlights the remaining challenges for the production ...
Gabriel Durin, Albane Fontaine, Jean‐Claude Berthet, Thibault Cantat   +3 more
wiley   +1 more source

“Dial Up and Lock In”: Asymmetric organo-Brønsted acid catalysis incorporating stable isotopes [PDF]

, 2016
An operationally simple organo-Brønsted-acid-catalyzed asymmetric and regioselective “dial up and lock in” of one or more stable isotopes into organic compounds is unknown.
Bachera, Dominika U., Bew, Sean P., Coles, Simon J., Hiatt-Gipson, Glyn D., Pesce, Paolo, Pitak, Mateusz, Thurston, Sean M., Zdorichenko, Victor   +7 more
core   +1 more source

Chiral Phosphoric Acid-Catalyzed Asymmetric Synthesis of Axially Chiral Arylpyrazole

Organic Letters
A chiral phosphoric acid-catalyzed efficient, operationally simple, general method for straightforward syntheses of axially chiral arylpyrazole employing 3-aryl-5-aminopyrazoles reacting with azonaphthalenes was firstly reported. A wide variety of axially chiral heterobiaryl diamines in generally good yields with excellent enantioselectivities were ...
Shi-Wu Li, Yu Qi, Shujun Tong, Jiaqi Pu
openaire   +1 more source

Heteroatom‐Doped Graphdiynes and Their Applications in Photo‐/Electro‐Catalytic CO2 Conversion

Carbon Innovation, EarlyView.
This review highlights the versatile role of doped graphdiyne (GDY) in boosting CO2 conversion, where metal and non‐metal doping simultaneously tune the electronic structure, create abundant active sites, and improve charge separation, light harvesting, and CO2 adsorption.
Fangzhou Yang, Yuwei Zhang, Wai‐Yeung Wong, Linli Xu   +3 more
wiley   +1 more source

Catalytic enantioselective synthesis of inherently chiral calix[4]arenes via organocatalyzed aromatic amination enabled desymmetrization

Nature Communications
Inherently chiral calix[4]arenes represent a distinct class of chiral frameworks whose chirality arises from the dissymmetry of the entire molecule. Although these chiral scaffolds have been widely applied in various research fields, their catalytic ...
Mengyao Yuan, Wansen Xie, Shaoze Yu, Tong Liu, Xiaoyu Yang   +4 more
doaj   +1 more source