Results 81 to 90 of about 194,755 (364)

Recyclable enamine catalysts for asymmetric direct cross-aldol reaction of aldehydes in emulsion media

, 2011
Recyclable Enamine Catalysts for Asymmetric Direct Cross-aldol Reaction of Aldehydes in Emulsion MediaHighly diastereo- and enantioselective cross-aldol reactions of aldehydes (> 20 : 1 dr, 99% ee), catalyzed by chiral diamine-polyoxometalate acid ...
Liu, Yan, Li, Jun, Yan Liu, Jun Li, Can Li, Sheng-Mei Lu, Qiang Gao, Lu, Sheng-Mei, Gao, Qiang, Li, Can, 李灿   +10 more
core   +1 more source

@Co Nanoparticle‐based Catalyst for Efficient Selective Transfer Hydrogenation of α,β‐Unsaturated Aldehydes

, 2020
Currently, developing simple and effective catalysts for selective hydrogenation of α,β‐unsaturated aldehydes to unsaturated alcohols is challenging.
Zhao, Huijun, Chen, Chun, Chun Chen, Han, Miaomiao, Wanbing Gong, Haimin Zhang, Yue Lin, Miaomiao Han, Guozhong Wang, Gong, Wanbing, Zhang, Haimin, Huijun Zhao, Wang, Guozhong, Lin, Yue   +13 more
core   +1 more source

Facile Preparation of Carbon Membranes Derived from a Fluorenyl‐Containing Polyimine for Selective Hydrogen Separation

Advanced Functional Materials, EarlyView.
A fluorenyl‐containing polyimine is introduced as a simple, scalable precursor for high‐performance carbon membranes. The precursor's intrinsic kinked structure enables defect‐free membrane formation with enhanced hydrogen permeance and excellent ideal selectivities for key industrial gas pairs (H2/N2, H2/CH4, and H2/CO2), offering a practical route ...
Clara Coiana, Christos Pantazidis, Ankita Mandal, Maarten Bransen, Fausto Gallucci, Željko Tomović   +5 more
wiley   +1 more source

Reductive amination with zinc powder in aqueous media

Beilstein Journal of Organic Chemistry, 2011
Zinc powder in aqueous alkaline media was employed to perform reductive amination of aldehydes with primary amines. The corresponding secondary amines were obtained in good yields along with minor amounts of hydrodimerization byproducts.
Giovanni B. Giovenzana, Daniela Imperio, Andrea Penoni, Giovanni Palmisano   +3 more
doaj   +1 more source

Engineering Pendant Group Chemistry to Control Hydrophilicity and Oxidative Degradation of Thioketal‐Based Biomaterials

Advanced Functional Materials, EarlyView.
Thioketal (TK) polymers are promising biomaterials due to their selective biodegradation by reactive oxygen species (ROS), but they respond slowly to physiologic doses of ROS. Here, the TK bond's pendant groups are modified to enhance the degradation of TK‐based implants both in vitro and in vivo.
Karina A. Bruce, Dylan W. Marques, Alan J. Fullenkamp, Emma‐Louise Lowell, Rais B. Fataki, Jake D. Ryan, John R. Martin   +6 more
wiley   +1 more source

Redox-active tetrathiafulvalene and dithiolene compounds derived from allylic 1,4-diol rearrangement products of disubstituted 1,3-dithiole derivatives

Beilstein Journal of Organic Chemistry, 2010
We present a series of compounds by exploiting the unusual 1,4-aryl shift observed for electron-rich 1,3-dithiole-2-thione and tetrathiafulvalene (TTF) derivatives in the presence of perchloric acid.
Filipe Vilela, Peter J. Skabara, Christopher R. Mason, Thomas D. J. Westgate, Asun Luquin, Simon J. Coles, Michael B. Hursthouse   +6 more
doaj   +1 more source

Aldehydes and Ketones Influence Reactivity and Selectivity in Nickel-Catalyzed Suzuki-Miyaura Reactions

, 2019
We show that the energetically-favorable coordination of aldehydes and ketones – but not esters – to nickel(0) during Suzuki-Miyaura reactions can lead either to exquisite selectivity and enhanced reactivity, or to the inhibitionof the reaction.
Alasdair, Cooper, Sonia, Bajo, David, Leonard, Paul, Burton, David, Nelson   +4 more
core   +1 more source

Bioinspired Mechanically Robust Organic–Inorganic Hybridized Bio‐Adhesives With up to 50% Inorganic Components by Bi‐Continuous Phase Engineering

Advanced Functional Materials, EarlyView.
A robust plant protein adhesive was prepared by fabricating a bi‐continuous organic–inorganic hybrid structure. Compared with traditional organic–inorganic hybrid adhesives, the addition amount of inorganic phase is increased from 0.2%–3.0% to 50%, and the strength and toughness are increased by 6 and 121 times, respectively.
Zheng Liu, Wenlong Luo, Xu Yang, Xin Zhang, Yuru Zhu, Jingchao Li, Jianzhang Li, Jing Luo, Zhezhe Zhou, Pingan Song, Qiang Gao   +10 more
wiley   +1 more source

Flash Assembloids: A Rapid Biofabrication of a Platform for Modeling Early Glioblastoma Invasion at the Glioblastoma–Brain Organoid Interfaces

Advanced Healthcare Materials, EarlyView.
This study presents a bioengineered assembloid (ASM) system combining glioblastoma (GBM) cells in oxidized alginate (OA) microgels with dorsal organoids (DOs). This model simulates brain tumor‐host interactions, revealing enhanced GBM invasion, altered gene expression, and aggressive infiltration patterns, demonstrating ASM as a valuable platform for ...
Chao Liang, Henry Robert Howard, Shihui Chen, Won‐Young Choi, Summer Cao, Arthur Chien, Kevin Zou, Michael Kassiou, Fabien Delerue, Ho Sang Jung, Yeonju Park, Young Mee Jung, Yong‐Dae Kwon, Karrie M. Kiang, Gilberto Ka‐Kit Leung, Ryohichi Sugimura, Ann‐Na Cho, Sang Jin Lee   +17 more
wiley   +1 more source

Enzyme-Mediated Cross-Benzoin Reaction of Highly Enolizable Aldehydes and Aryl Aldehydes for Acess to Chiral Phosphonates

Enzymatic catalysis has emerged as an attractive technology for organic synthesis but remains in its infancy for constructing biologically-relevant chiral phosphonates.
Yongtao, Xie, Zheng, Zhu, Dan, Li, Yonggui Robin, Chi, Yongyuan, Ju, Lixin, Zhang, Huangong, Li, Jingyu, Zhang, Ling, Yu, Guoliang, Zhu, Dongqi, Wu   +10 more
core   +1 more source