Haku
Aineistot 441-450 / 5723
Asymmetric Synthesis of Amino-Bis-Pyrazolone Derivatives via an Organocatalytic Mannich Reaction
(American Chemical Society, 2017)
A new series of N-Boc ketimines derived from pyrazolin-5-ones have been used as electrophiles in asymmetric Mannich reactions with pyrazolones. The amino-bis-pyrazolone products are obtained in excellent yields and ...
Asymmetric Synthesis of Chiral Bimetallic [Ag28Cu12(SR)24]4- Nanoclusters via Ion Pairing
(American Chemical Society, 2016)
In this work, a facile ion-pairing strategy for asymmetric
synthesis of optically active negatively charged chiral metal nanoparticles
using chiral ammonium cations is demonstrated. A new thiolated chiral
three-concentric-shell ...
Asymmetric Synthesis of Dihydropyranones with Three Contiguous Stereocenters by an NHC‐Catalyzed Kinetic Resolution
(Wiley, 2021)
An oxidative NHC-catalyzed kinetic resolution (KR) of racemic mixtures is presented. The developed reaction furnishes tricyclic dihydropyranones with three contiguous stereocenters in excellent dia- and enantioselectivity, ...
Asymmetric Synthesis of Spirocyclic β‐Lactams via Copper‐Catalyzed Kinugasa/Michael Domino Reactions
(Wiley, 2018)
The first copper‐catalyzed highly chemo‐, regio‐, diastereo‐, and enantioselective Kinugasa/Michael domino reaction for the desymmetrization of prochiral cyclohexadienones is described. In the presence of a chiral copper ...
Asymmetries in reproductive anatomy : insights from promiscuous songbirds
(Oxford University Press, 2019)
Directional asymmetry in gonad size is commonly observed in vertebrates and is particularly pronounced in birds, where the left testis is frequently larger than the right. The adaptive significance of directional asymmetry ...
Asymptotic and bootstrap tests for subspace dimension
(Elsevier, 2022)
Many linear dimension reduction methods proposed in the literature can be formulated using an appropriate pair of scatter matrices. The eigen-decomposition of one scatter matrix with respect to another is then often used ...
Asymptotic behaviors of solutions to quasilinear elliptic equations with Hardy potential
(Academic Press, 2016)
Optimal estimates on asymptotic behaviors of weak solutions both at the
origin and at the infinity are obtained to the following quasilinear elliptic equations
−Δpu − μ
|x|
p |u|
p−2
u + m|u|
p−2
u = f(u), x ∈ RN ...
Asymptotic C1,γ-regularity for value functions to uniformly elliptic dynamic programming principles
(Springer, 2022)
In this paper we prove an asymptotic C1,γ-estimate for value functions of stochastic processes related to uniformly elliptic dynamic programming principles. As an application, this allows us to pass to the limit with a ...
Asymptotic Hölder regularity for the ellipsoid process
(EDP Sciences, 2020)
We obtain an asymptotic Hölder estimate for functions satisfying a dynamic programming principle arising from a so-called ellipsoid process. By the ellipsoid process we mean a generalization of the random walk where the ...
Asymptotic Lipschitz regularity for tug-of-war games with varying probabilities
(Springer, 2020)
We prove an asymptotic Lipschitz estimate for value functions of tug-of-war games with varying probabilities defined in Ω ⊂ ℝn. The method of the proof is based on a game-theoretic idea to estimate the value of a related ...