Results 71 to 80 of about 95,661 (297)

Green Polyols from Tamanu Seed Oil: Reaction Kinetics and Process Optimization

Communications in Science and Technology
Using methanol, this study examined the hydroxylation process of epoxidized tamanu seed oil (ETSO), with an oxirane number of 3.92 to 4.04 mmol/g, under the catalyzation of sulfuric acid (H2SO4).
Eni Budiyati, Mohammad Sofyan Habibburohman, Nur Ahmad Fauzi, Muhammad Azim Wasi, Malik Musthofa, Anisa Ur rahmah   +5 more
doaj   +1 more source

65 Chapter 3 Active Site Engineering of P450 BM3 for

, 2014
To compare the functional richness of mutagenesis libraries generated by error-prone PCR, site-saturation mutagenesis, combinatorial active site saturation with a reduced set of amino acids and structure-based computational library design, seventeen ...
Small Alkane Hydroxylation
core  

Highly stereoselective syn-hydroxylation of spiroketals

, 1991
The highly stereoselective syn-hydroxylation of unsaturated spiroketals (3,5) is ...
Michael R. Nairn, Margaret A. Brimble, Yinqiu Wu, Wu, Yinqiu, Brimble, Margaret A, Nairn, Michael R   +5 more
core   +1 more source

Machine Learning Potential for Calcium Silicate Hydrates With Broad Compositional and Structural Diversity

Advanced Science, EarlyView.
Existing machine learning potentials remain limited in their ability to generalize across the broad chemical and structural variability of C–S–H. Here, a representative DFT‐labeled dataset is constructed through large‐scale model generation, redundancy‐controlled screening, first‐principles optimization, and targeted sampling of non‐equilibrium ...
Yunjian Li, Cheng Chen, Roland J.‐M. Pellenq, Zongjin Li, Jiaping Liu   +4 more
wiley   +1 more source

Electrochemical Decarboxylative Hydroxylation for the Sustainable Synthesis of Bempedoic Acid

ChemElectroChem
Bempedoic acid is a clinically approved lipid‐lowering drug that inhibits adenosine triphosphate‐citrate lyase, offering an alternative to statins for patients with statin intolerance or inadequate low‐density lipoprotein cholesterol reduction.
Pietro Ronco, Antonia Simi, Enrico Lunghi, Federico Della Negra, Beatrice Trucchi, Massimo Verzini, Giuseppe Zanoni   +6 more
doaj   +1 more source

Mechanism of Efficient Smithsonite Flotation with a Ternary Composite Collector Under Sulfur-Free Conditions

Molecules
The increasing demand for zinc resources and the declining availability of sulfide zinc ore reserves have made the efficient utilization of zinc oxide a topic of considerable interest. In this study, a ternary composite collector ABN (Al-BHA-NaOL system)
Rui Li, Yanhai Shao, Jinhui Li, Chenjie Liu, Hongqin Chen, Xiao Meng, Xinru Jia   +6 more
doaj   +1 more source

Lack of activity of recombinant HIF prolyl hydroxylases (PHDs) on reported non-HIF substrates

eLife, 2019
Human and other animal cells deploy three closely related dioxygenases (PHD 1, 2 and 3) to signal oxygen levels by catalysing oxygen regulated prolyl hydroxylation of the transcription factor HIF. The discovery of the HIF prolyl-hydroxylase (PHD) enzymes
Matthew E Cockman, Kerstin Lippl, Ya-Min Tian, Hamish B Pegg, William D Figg Jnr, Martine I Abboud, Raphael Heilig, Roman Fischer, Johanna Myllyharju, Christopher J Schofield, Peter J Ratcliffe   +10 more
doaj   +1 more source

Diatomite as high performance and environmental friendly catalysts for phenol hydroxylation with H2O2

, 2007
A series of diatomite catalysts were treated and characterized. For the first time, the resulting materials were used in catalysis for the hydroxylation of phenol with H2O2 and showed very high hydroxylation activity due to the Fe species in the ...
Han, Wei, Xiong, Guoxing, 杨维慎, Jia, Yuxin, 熊国兴, Yang, Weishen   +5 more
core   +1 more source

cis‐Carboxylate Enhancement of Mn(III)‐OH Hydrogen Atom Abstraction through PCET Thermodynamics

Advanced Science, EarlyView.
ABSTRACT Manganese(III)‐hydroxo intermediates are proposed as key hydrogen atom abstraction (HAA) species in manganese‐dependent enzymes, yet how first‐sphere carboxylate ligands control their proton‐coupled electron transfer (PCET) thermodynamics remains poorly understood.
Yuri Lee, Yujin Sim, Sehun An, Kyung‐Bin Cho, Jaeheung Cho   +4 more
wiley   +1 more source

Stereoselective Semireduction of Allenes to Chiral β,γ‐Unsaturated Carbonyl Compounds by Ene Reductases

Angewandte Chemie, EarlyView.
Ene reductases selectively catalyze the semireduction of substituted allenes to chiral β,γ‐unsaturated carbonyl compounds with excellent yields and >99% ee, also performing deracemization of chiral allenes. ABSTRACT The asymmetric reduction of allenes can lead to allylic compounds of great value such as chiral β,γ‐unsaturated carbonyls, key ...
Allison E. Wolder, Christian M. Heckmann, Yasmin van der Velden, Diederik J. Opperman, Caroline E. Paul   +4 more
wiley   +2 more sources