Results 1 to 10 of about 39,718 (211)
Mirror symmetry breaking with limited enantioselective autocatalysis and temperature gradients: a stability survey [PDF]
Phys. Chem. Chem. Phys., 2013, Advance Article, 2012 We analyze limited enantioselective (LES) autocatalysis in a temperature gradient and with internal flow/recycling of hot and cold material. Microreversibility forbids broken mirror symmetry for LES in the presence of a temperature gradient alone. This symmetry can be broken however when the auto-catalysis and limited enantioselective catalysis are ...
Blanco, Celia +5 more
arxiv +3 more sources
Stability of racemic and chiral steady states in open and closed chemical systems [PDF]
, 2008 The stability properties of models of spontaneous mirror symmetry breaking in chemistry are characterized algebraically. The models considered here all derive either from the Frank model or from autocatalysis with limited enantioselectivity. Emphasis is given to identifying the critical parameter controlling the chiral symmetry breaking transition from
Avetisov +44 more
arxiv +3 more sources
Chiral sulfide and achiral sulfonic acid cocatalyzed enantioselective electrophilic tandem selenylation semipinacol rearrangement of allenols [PDF]
Nature CommunicationsA highly enantioselective electrophilic selenylation/semipinacol rearrangement of allenols has been developed, which is enabled by the cooperative catalysis of a chiral sulfide and an achiral sulfonic acid.
Ren-Fei Cao +7 more
doaj +2 more sources
Enantioselective Aromatic Amination? [PDF]
Chemistry – A European Journal, 2021 AbstractThe atroposelective formation of C−N bonds has recently emerged within the field of amination reactions. On first sight, it may seem quite surprising that such an ancient class of organic coupling reactions (Gabriel, Ullmann, Goldberg, Buchwald, Hartwig and many others) has so few enantioselective solutions, and this in spite of asymmetric ...
Vinzenz Thönnißen +1 more
openaire +4 more sources
Enantioselective chiral orientation induced by a combination of a long and a short laser pulse [PDF]
Phys. Rev. A 105, 033113 (2022), 2021 Enantioselective orientation of chiral molecules excited by a shaped picosecond laser pulse and a delayed femtosecond pulse is considered. Using quantum mechanical simulations, we demonstrate a strong field-free enantioselective orientation along the laser propagation direction.
arxiv +1 more source
Optimal Selective Orientation of Chiral Molecules Using Femtosecond Laser Pulses [PDF]
J. Chem. Phys. 157, 034304 (2022), 2022 We present a comprehensive study of enantioselective orientation of chiral molecules excited by a pair of delayed cross-polarized femtosecond laser pulses. We show that by optimizing the pulses' parameters, a significant (~ 10%) degree of enantioselective orientation can be achieved at zero and at five kelvin rotational temperatures.
arxiv +1 more source
Enantioselective protonation [PDF]
Nature Chemistry, 2009 Enantioselective protonation is a common process in biosynthetic sequences. The decarboxylase and esterase enzymes that effect this valuable transformation are able to control both the steric environment around the proton acceptor (typically an enolate) and the proton donor (typically a thiol).
Mohr, Justin T. +2 more
openaire +4 more sources
Supramolecular Chiral Nanozymes with High and Switchable Enantioselectivity
Small Structures, 2023 Understanding and manipulation of catalytic enantioselectivity have emerged as a paramount challenge for decades. Inspired by nature, nanozymes with enantioselectivity have been designed.
Chu Wang +7 more
doaj +1 more source
The Enantioselective Tsuji Allylation [PDF]
Journal of the American Chemical Society, 2004 The first catalytic enantioselective examples of the Tsuji allylation using enol carbonates and enol silanes are described. The products possess a quaternary stereogenic center and are useful building blocks for synthetic chemistry.
Behenna, Douglas C., Stoltz, Brian M.
openaire +7 more sources
Comprehensive Analysis of a Yeast Lipase Family in the Yarrowia Clade. [PDF]
PLoS ONE, 2015 Lipases are currently the subject of intensive studies due to their large range of industrial applications. The Lip2p lipase from the yeast Yarrowia lipolytica (YlLIP2) was recently shown to be a good candidate for different biotechnological applications.
Muchalin Meunchan +5 more
doaj +1 more source