Results 101 to 110 of about 511,953 (205)

Data-Driven Prediction of Circular Dichroism-Based Calibration Curves for the Rapid Screening of Chiral Primary Amine Enantiomeric Excess Values. [PDF]

J Am Chem Soc, 2022
Howard JR, Bhakare A, Akhtar Z, Wolf C, Anslyn EV.   +4 more
europepmc   +1 more source

ENANTIOMERIC EXCESS MEASUREMENTS OF ISOPULEGOL USING CHIRAL TAG SPECTROSCOPY

Chiral analysis was performed on samples of isopulegol and its isomers using chiral tag rotational spectroscopy. Isopulegol, with three chiral centers, has 8 stereoisomers.
Mayer, Kevin J
core   +1 more source

Rhodium‐Catalyzed Synthesis of Enantioenriched α‐Substituted Primary Amines Through Asymmetric Transfer Hydrogenation

Chemistry – A European Journal, EarlyView.
Enantioenriched α‐substituted primary amines are efficiently prepared by rhodium‐catalyzed asymmetric transfer hydrogenation of ortho‐hydroxyaryl N─H imines under mild conditions using a low catalyst loading and ammonium formate as the hydrogen source in high yields (up to 99%) and enantioselectivities (up to 99% ee).
Chonghuo Liu, Guillaume Lefèvre, Qin Yin, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +4 more
wiley   +1 more source

High-throughput screening of α-chiral-primary amines to determine yield and enantiomeric excess. [PDF]

Tetrahedron, 2021
Moor SR, Howard JR, Herrera BT, Anslyn EV.   +3 more
europepmc   +1 more source

Lanthanide Centered and Circular Polarized Luminescence (CPL) From Tb(III) Complexes Made From Structurally Simple Methoxy‐Phenyl and Phenol‐Derived Pyridyldiamide (pda) Ligands

Chemistry – A European Journal, EarlyView.
The development of chiral pda derived methoxy ligands L1a [1(R,R)] and L1b [1(S,S)], along with their phenol derivatives L2a [2(R,R)] and L2b [2(S,S)], and their respective Tb(III) complexes is described. These Tb‐complexes exhibited Tb(III)‐centered emission upon and their chiroptical properties were probed by using both CD and CPL spectroscopy ...
Jennifer E. Jones, Jonathan A. Kitchen, Robert D. Peacock, Thorfinnur Gunnlaugsson   +3 more
wiley   +1 more source

A new chiral shift reagent for the determination of enantiomeric excess and absolute configuration in cyanohydrins

, 2009
Optically active mandelic acid in the presence of dimethylaminopyridine is an excellent chiral shift reagent for the determination of enantiomeric excess and absolute configuration in ...
Moon, Lomary S., Jolly, Ravinder S., Kasetti, Yoganjaneyulu, Bharatam, Prasad V.   +3 more
core   +1 more source

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

Chemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola, Miquel Solà, Albert Poater   +2 more
wiley   +1 more source

Using Enzyme Inhibition as a High Throughput Method to Measure the Enantiomeric Excess of a Chiral Sulfoxide

, 2016
The enantiomeric excess of methyl p-tolyl sulfoxide can be determined in a high throughput format by measuring its ability to inhibit the alcohol dehydrogenase catalyzed oxidation of ethanol.
Christopher M. Sprout (2666197), Christopher T. Seto (2264188)   +1 more
core   +1 more source

Synthesis of Chiral‐at‐Sulfur(VI) Sulfonimidamide Brønsted Acids

Chemistry – A European Journal, EarlyView.
A simple, modular route to chiral‐at‐sulfur(VI) Brønsted acids is described, delivering S‐chiral sulfonimidamides, C2‐symmetric acids, and BINOL‐based hybrid systems through stereospecific reactions of sulfonimidoyl fluorides and chlorides. ABSTRACT Herein, we report an efficient and simple strategy to access diverse chiral‐at‐sulfur(VI) Brønsted acids.
Yu Han, Natassa Lional, Dieuwertje E. Streefkerk, Jesse M. S. Goed, Bo Chen, Han Zuilhof, Fedor M. Miloserdov   +6 more
wiley   +1 more source

Steps toward Rationalization of the Enantiomeric Excess of the Sakurai-Hosomi-Denmark Allylation Catalyzed by Biisoquinoline N,N'-Dioxides Using Computations. [PDF]

Catalysts, 2021
Morgante P, Deluca C, Jones TE, Aldrich GJ, Takenaka N, Peverati R.   +5 more
europepmc   +1 more source