Results 21 to 30 of about 272,000 (300)

Green Production Technology of the Monomer of Nylon-6: Caprolactam

Engineering, 2017
After two decades’ endeavor, the Research Institute of Petroleum Processing (RIPP) has successfully developed a green caprolactam (CPL) production technology. This technology is based on the integration of titanium silicate (TS)-1 zeolite with the slurry-
Baoning Zong, Bin Sun, Shibiao Cheng, Xuhong Mu, Keyong Yang, Junqi Zhao, Xiaoxin Zhang, Wei Wu   +7 more
doaj   +1 more source

Lewis acid-catalyzed asymmetric reactions of β,γ-unsaturated 2-acyl imidazoles

Nature Communications, 2020
The investigation of reactivity of β,γ-unsaturated carbonyl compounds is of great synthetic value, especially in asymmetric transformations. Here, the authors report a catalytic asymmetric tandem isomerization/α-Michael addition of β,γ-unsaturated 2-acyl
Tengfei Kang, Liuzhen Hou, Sai Ruan, Weidi Cao, Xiaohua Liu, Xiaoming Feng   +5 more
doaj   +1 more source

Visible-light photoredox-catalyzed umpolung carboxylation of carbonyl compounds with CO2

Nature Communications, 2021
Compounds bearing a carbonyl group, such as aldehydes and ketones, are important industrial chemicals and widespread in pharmaceuticals and natural products.
Guang-Mei Cao, Xin-Long Hu, Li-Li Liao, Si-Shun Yan, Lei Song, Jason J. Chruma, Li Gong, Da-Gang Yu   +7 more
doaj   +1 more source

Breaking through water-splitting bottlenecks over carbon nitride with fluorination

Nature Communications, 2022
Graphitic carbon nitride has long been considered a poor oxygen evolution catalyst. Here, the authors report a simple fluorination strategy to prevent the accumulation of inert C=O on carbon nitride to break through this bottleneck.
Ji Wu, Zhonghuan Liu, Xinyu Lin, Enhui Jiang, Shuai Zhang, Pengwei Huo, Yan Yan, Peng Zhou, Yongsheng Yan   +8 more
doaj   +1 more source

Continuous manufacturing – the Green Chemistry promise?

, 2019
Continuous manufacturing and Green Chemistry, are two promising approaches to synthesis with underutilized potential that are gaining traction by the wider pharmaceutical community.
Luke Rogers, Jensen, Klavs F., Klavs F. Jensen, Rogers, Luke   +3 more
core   +1 more source

Enantioselective organocatalytic synthesis of axially chiral aldehyde-containing styrenes via SNAr reaction-guided dynamic kinetic resolution

Nature Communications, 2023
The precise and efficient construction of axially chiral scaffolds, particularly toward the aryl-alkene atropoisomers with impeccably full enantiocontrol and highly structural diversity, remains greatly challenging. Herein, we disclose an organocatalytic
Fengyuan Guo, Siqiang Fang, Jiajia He, Zhishan Su, Tianli Wang   +4 more
doaj   +1 more source

A Highly Efficient Heterogeneous Catalyst of Bimetal-Organic Frameworks for the Epoxidation of Olefin with H₂O₂

Molecules, 2020
A series of bimetel organic framework MnxCu1−x-MOF were prepared. The MOFs was characterized and analyzed by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy
Fei Wang, Xiang-Guang Meng, Yan-Yan Wu, Hong Huang, Jing Lv, Wen-Wang Yu   +5 more
doaj   +1 more source

Stereodivergent synthesis of vicinal quaternary-quaternary stereocenters and bioactive hyperolactones

Nature Communications, 2018
Stereodivergent construction of adjacent quaternary-quaternary stereocenters remains a formidable synthetic challenge. Here, the authors report a nickel-catalyzed enantioselective dearomatization Claisen rearrangement leading to vicinal all-carbon ...
Haifeng Zheng, Yan Wang, Chaoran Xu, Xi Xu, Lili Lin, Xiaohua Liu, Xiaoming Feng   +6 more
doaj   +1 more source

Modern catalysis in the synthesis of some pharmaceuticals and fine chemicals [PDF]

Hemijska Industrija, 2002
Catalysis in the synthesis of Pharmaceuticals and line chemicals nowadays becomes more and more important. Synthesis that minimizes wastes is important from the economical aspect, as well as from the environmental aspect.
Petrović Slobodan D., Mišić-Vuković Milica M., Mijin Dušan Ž.   +2 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source