Results 21 to 30 of about 280,815 (357)

Utilization of steric hindrance of alkyl lithium-based initiator to synthesize high 1,4 unit-containing hydroxyl- terminated polybutadiene [PDF]

open access: yesRoyal Society Open Science, 2018
A novel alkyl lithium-based initiator with relatively large steric hindrance, tert-butyldimethylsiloxydimethylpropyl lithium (TBDMSODPrLi), was designed and synthesized.
Xin Min, Xiaodong Fan, Jie Liu
doaj   +1 more source

Using steric hindrance to manipulate and stabilize metal halide perovskites for optoelectronics. [PDF]

open access: yesChem Sci, 2021
The chemical instability of metal halide perovskite materials can be ascribed to their unique properties of softness, in which the chemical bonding between metal halide octahedral frameworks and cations is the weak ionic and hydrogen bonding as in most ...
Miao Y, Chen Y, Chen H, Wang X, Zhao Y.
europepmc   +2 more sources

Structure-guided steric hindrance engineering of Bacillus badius phenylalanine dehydrogenase for efficient L-homophenylalanine synthesis. [PDF]

open access: yesBiotechnol Biofuels, 2021
Background Direct reductive amination of prochiral 2-oxo-4-phenylbutyric acid (2-OPBA) catalyzed by phenylalanine dehydrogenase (PheDH) is highly attractive in the synthesis of the pharmaceutical chiral building block l -homophenylalanine ( l -HPA) given
Wu T, Mu X, Xue Y, Xu Y, Nie Y.
europepmc   +2 more sources

STRIDER: Steric hindrance estimator [PDF]

open access: yes, 2020
AbstractIn silicomodeling plays a vital role in thede novodesigning and docking of biomacromolecules as well as in exploring their conformational dynamics. Additionally, it has a major role in acquiring the structural insights from the parameters derived from the experimental techniques such as cryo-electron microscopy.
Prasad Patro, L Ponoop   +1 more
openaire   +1 more source

Phenyl Ring: A Steric Hindrance or a Source of Different Hydrogen Bonding Patterns in Self-Organizing Systems? [PDF]

open access: yesJ Phys Chem Lett, 2021
A series of five alcohols (3-methyl-2-butanol, 1-cyclopropylethanol, 1-cyclopentylethanol, 1-cyclohexylethanol, and 1-phenylethanol) was used to study the impact of the size of steric hindrance and its aromaticity on self-assembling phenomena in the ...
Nowok A   +7 more
europepmc   +2 more sources

Steric hindrance effects on the retention of pressure-induced emission toward scintillators

open access: goldCell Reports Physical Science, 2023
Dianlong Zhao   +6 more
openalex   +2 more sources

Observation of 1,3-Diketones Formation in the Reaction of Bulky Acyl Chlorides with Methyllithium

open access: yesMolecules, 2012
The formation of 1,3-diketones was observed in the reactions of bulky acyl chlorides with methyllithium. The reaction products depend on the steric hindrance around the carbonyl group of the acyl chloride and the electronic effect of the group(s) linked ...
Liwen Yang, Nianfa Yang, Jian Zhang
doaj   +1 more source

A Systematic Comparison of the Intrinsic Properties of Wheat and Oat Bran Fractions and Their Effects on Dough and Bread Properties: Elucidation of Chemical Mechanisms, Water Binding, and Steric Hindrance. [PDF]

open access: yesFoods, 2021
This study aimed at elucidating the contribution of chemical interactions, water binding, and steric hindrance on the effect of wheat and oat brans and of their fractions, i.e., soluble and insoluble, on dough and bread properties.
Renzetti S, Theunissen M, Horrevorts K.
europepmc   +2 more sources

A Model for Granular Texture with Steric Exclusion [PDF]

open access: yes, 2002
We propose a new method to characterize the geometrical texture of a granular packing at the particle scale including the steric hindrance effect. This method is based on the assumption of a maximum disorder (entropy) compatible both with strain-induced ...
F. Calvetti   +8 more
core   +2 more sources

Scope and limitations of aliphatic Friedel-Crafts alkylations. Lewis acid catalyzed addition reactions of alkyl chlorides to carbon-carbon double bonds [PDF]

open access: yes, 1983
Lewis acid catalyzed addition reactions of alkyl halides 1 with unsaturated hydrocarbons 2 have been studied. 1:l addition products 3 are formed if the addends 1 dissociate faster than the corresponding products 3; otherwise, polymerization of 2 takes ...
Mayr, Herbert, Striepe, Wilhelm
core   +1 more source

Home - About - Disclaimer - Privacy