Results 91 to 100 of about 149,811 (326)

Comparative Analysis of the Conversion of Mandelonitrile and 2-Phenylpropionitrile by a Large Set of Variants Generated from a Nitrilase Originating from Pseudomonas fluorescens EBC191

Molecules, 2019
The arylacetonitrilase from the bacterium Pseudomonas fluorescens EBC191 has been intensively studied as a model to understand the molecular basis for the substrate-, reaction-, and enantioselectivity of nitrilases.
Andreas Stolz, Erik Eppinger, Olga Sosedov, Christoph Kiziak   +3 more
doaj   +1 more source

Discovery of an iridacycle catalyst with improved reactivity and enantioselectivity in the hydrogenation of dialkyl ketimines

, 2013
Catalytically active iridacycles are formed by cyclometalation of acetophenone imines with Ir–PHOX complexes under hydrogen atmosphere. These complexes show unusually high reactivity and enantioselectivity in the hydrogenation of alkyl methyl ketimines ...
York Schramm, Fabiola Barrios-Landeros, A. Pfaltz   +2 more
semanticscholar   +1 more source

50 Years of Giese Reaction – a Personal View

Angewandte Chemie, EarlyView.
The Giese‐Reaction celebrates its 50. Birthday, it is a cyclic radical chain reaction centered around C,C‐bond formation in a three component synthesis. This minireview speaks about the birth of the name‐reaction, explains how the complete understanding of its reaction mechanism stimulates new methods in organic synthesis, and why it can proceed in ...
Martin Spichty, Hendrik Zipse, Salem Majouri, Katharina M. Fromm, Bernd Giese   +4 more
wiley   +2 more sources

Density Functional Theory Study on Mechanism and Selectivity of Nickel-Catalyzed Hydroboration of Vinylarenes

Organics
Density functional theory calculations were performed to elucidate the mechanistic details and origins of the selectivity of the nickel-catalyzed hydroboration of vinylarenes using B2pin2/MeOH.
Jingwei Wu, Yongzhu Zhou, Lei Zhang, Jie Zhang, Pei Song, Xiaoling Wang, Cuihong Wang   +6 more
doaj   +1 more source

Inter- and intramolecular enantioselective carbolithiation reactions

Beilstein Journal of Organic Chemistry, 2013
In this review we summarize recent developments in inter- and intramolecular enantioselective carbolithiation reactions carried out in the presence of a chiral ligand for lithium, such as (−)-sparteine, to promote facial selection on a C=C bond.
Asier Gómez-SanJuan, Nuria Sotomayor, Esther Lete   +2 more
doaj   +1 more source

Total Synthesis of (+)‐Melonine and (+)‐N4‐Oxy Melonine Enabled by an Intramolecular Alkene Diamination Reaction

Angewandte Chemie, EarlyView.
A complexity‐generating intramolecular alkene diamination constitutes the pivotal step in the enantioselective synthesis of the title natural products featuring a strained, cage‐like pentacyclic architecture. Abstract Among more than four thousand monoterpene indole alkaloids (MIAs) isolated to date, only a few feature a 2,2,3‐trisubstituted indoline ...
Vincent Goëlo, Qian Wang, Jieping Zhu
wiley   +2 more sources

Chirality‐Induced Hydroxyapatite Manipulates Enantioselective Bone‐Implant Interactions Toward Ameliorative Osteoporotic Osseointegration

Advanced Science
Inspired by the fundamental attribute of chirality in nature, chiral‐engineered biomaterials now represent a groundbreaking frontier in biomedical fields.
Liang Yang, Jinzhou Du, Shengyang Jin, Shuyi Yang, Zhaowei Chen, Shiyang Yu, Cunyi Fan, Chao Zhou, Hongjiang Ruan   +8 more
doaj   +1 more source

Spontaneous Mirror Symmetry Breaking in the Limited Enantioselective Autocatalysis Model: Abyssal Hydrothermal Vents as Scenario for the Emergence of Chirality in Prebiotic Chemistry [PDF]

, 2013
Josep M. Ribó, Joaquim Crusats, Zoubir El‐Hachemi, Albert Moyano, Celia Blanco, David Hochberg   +5 more
openalex   +1 more source

Exploring the World of Double Nanohoops

Angewandte Chemie International Edition, EarlyView.
As two conjugated nanohoops covalently linked by a central unit, double nanohoops are a relatively new class of strained nanocarbons with different properties to single nanohoops. This review gives an overview of all reported double nanohoops, categorizing their structures, syntheses, and discussing properties and applications. Creativity and synthetic
Luisa Rzesny, Philipp Seitz, Birgit Esser   +2 more
wiley   +1 more source

Multi-residue enantioselective determination of emerging drug contaminants in seawater by solid phase extraction and liquid chromatography-tandem mass spectrometry

, 2020
Katie McKenzie, Colin F. Moffat, Bruce Petrie   +2 more
openalex   +2 more sources