Results 81 to 90 of about 108,577 (178)

Enantioselective radical chemistry: a bright future ahead

open access: yesBeilstein Journal of Organic Chemistry
This perspective is focused on enantioselective free radical reactions. It describes several important catalytic asymmetric strategies applied to enantioselective radical reactions, including chiral Lewis acid catalysis, organocatalysis, photoredox ...
Anna C. Renner   +3 more
doaj   +1 more source

Organocatalytic atroposelective construction of axially chiral arylquinones

open access: yesNature Communications, 2019
Axially chiral compounds have widespread use in asymmetric catalysis. Here, the authors disclose a highly enantioselective synthesis of axially chiral o-naphthoquinones by chiral phosphoric acid catalysis and central-to-axial chirality conversion.
Shuai Zhu   +8 more
doaj   +1 more source

Holographic Monopole Catalysis of Baryon Decay

open access: yes, 2008
We study how monopole catalysis of baryon decay is realized in holographic QCD. Physics of monopole catalysis becomes much simpler in holographic description as it occurs due to the violation of the Bianchi identity for the 5D gauge symmetry when ...
Hong, Deog Ki   +3 more
core   +1 more source

Asymmetric Catalysis [PDF]

open access: yesProceedings of the National Academy of Sciences, 2004
Jack, Halpern, Barry M, Trost
openaire   +2 more sources

Chiral phosphonium ion-pairing catalysis: From structural innovation to asymmetric synthesis

open access: yesChemical Engineering Journal Advances
Chiral phosphonium salt catalysis has emerged as a crucial component of asymmetric ion-pairing catalysis, demonstrating growing significance in the field of asymmetric catalytic synthesis.
Wenchao Chen   +3 more
doaj   +1 more source

Asymmetric reactions in continuous flow

open access: yesBeilstein Journal of Organic Chemistry, 2009
An overview of asymmetric synthesis in continuous flow and microreactors is presented in this review. Applications of homogeneous and heterogeneous asymmetric catalysis as well as biocatalysis in flow are discussed.
Xiao Yin Mak   +2 more
doaj   +1 more source

Non-covalent interactions in supported asymmetric catalysis: a brief account

open access: yesComptes Rendus. Chimie
Recent developments in asymmetric catalysis involve the heterogeneization of chiral complexes so that they can be easily immobilized on different supports. This account focuses on procedures that lead to the formation of non-covalent interactions between
Ibos, Léa, Schulz, Emmanuelle
doaj   +1 more source

Spectroscopically Distinct Cobalt(II) Sites in Heterodimetallic Forms of the Aminopeptidase from \u3cem\u3eAeromonas proteolytica\u3c/em\u3e:  Characterization of Substrate Binding [PDF]

open access: yes, 1997
The Co(II)Zn(II)- and Zn(II)Co(II)-substituted derivatives of the aminopeptidase from Aeromonas proteolytica (AAP) were probed by EPR spectroscopy. EPR spectra of the high-spin S = 3/2 Co(II) ions in [CoZn(AAP)] and [ZnCo(AAP)] indicated that each metal ...
Bennett, Brian, Holz, Richard C.
core   +1 more source

Chiral phase-transfer catalysis in the asymmetric α-heterofunctionalization of prochiral nucleophiles

open access: yesBeilstein Journal of Organic Chemistry, 2017
Chiral phase-transfer catalysis is one of the major catalytic principles in asymmetric catalysis. A broad variety of different catalysts and their use for challenging applications have been reported over the last decades.
Johannes Schörgenhumer   +2 more
doaj   +1 more source

Discovery and enantiocontrol of axially chiral urazoles via organocatalytic tyrosine click reaction

open access: yesNature Communications, 2016
Axially chiral compounds play an important role in areas such as asymmetric catalysis. Here, the authors report an organocatalytic asymmetric tyrosine click-like reaction, giving access to enantio enriched urazoles with restricted rotation around an N-C ...
Ji-Wei Zhang   +5 more
doaj   +1 more source

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