Results 31 to 40 of about 167 (134)

8,13-Diisopropyl-10,11-dimethyl-bis([1,3]dioxolo[4′,5′:6,7]naphtho)[1,2-d;2,1-f][1,3]dioxepine

IUCrData, 2019
The title compound, C31H30O6, was obtained by protecting the six hydroxy groups of apogossypol by acetalization with dichloromethane. The molecule has a bridging dioxepine unit which hinders the rotation around the 2,2′-internaphthyl bond.
Amely Täufer, Angela Köckritz, Stephan Quint, Anke Spannenberg   +3 more
doaj   +1 more source

Advances in Sustainable Production of Bio‐Derived 5‐Alkoxymethylfurfural and Levulinate Esters: A Comprehensive Review

Carbon Energy, EarlyView.
The present review discusses the advancement in the catalytic synthesis of 5‐alkoxymethylfurfural (AMF) and levulinate esters (LEs) from the aspects of catalytic systems, reaction mechanisms, product isolation, and techno‐economic analysis, supplying valuable insights toward future sustainable and efficient manufacture of AMF and LEs. ABSTRACT The huge
Jun Zhang, Chunxiang Yang, Yuhe Liao, Jiawei Wang, Chengyu Li, Rui Shan, Haoran Yuan   +6 more
wiley   +1 more source

Novel tetronamides derived from mucobromic acid: synthesis, structural elucidation, DFT calculations and phytotoxic activity

Pest Management Science, EarlyView.
The acyclic mucobromic acid, activated by (1S)‐(+)‐10‐camphorsulfonic acid, afforded the chiral compound 1b, precursor for aza‐Michael addition/elimination on the butenolide yielding tetronamides 2b‐7b. Their relative SRSR configuration was confirmed by the spectrometric methods, DFT calculation and statistical methods.
Kamylla CF Faria, Vitor C Baia, Elson S Alvarenga   +2 more
wiley   +1 more source

Efficient Solketal Synthesis via Acetalization Using Sulfonated Carbon From Lavender Leaf Waste After Essential Oil Extraction

Chemistry &Biodiversity, Volume 23, Issue 8, August 2026.
Sulfonated carbon catalysts were synthesized from lavender leaf waste after essential oil extraction via hydrothermal carbonization (HTC). Under mild, low‐energy conditions, the catalyst achieved 97% glycerol conversion and 98% solketal selectivity. This approach valorizes agricultural residues and crude glycerol from biodiesel production, contributing
Julianne A. Bruno, Guilherme R. Pereira, Kelly R. Francisco, Gabriel H. M. de O. Pinto, Eraldo Lima, Ulisses A. Pereira, Garbas A. dos S. Junior, Patrícia F. Pinheiro   +7 more
wiley   +1 more source

Reversible Reaction-assisted Separating Technology for Synthesis of Ethanediol from Coal—Kinetics of Acetal Exchange Reaction

工程科学与技术, 2019
In the parallel acetalization of EG and 1,2–BDO towards aldehyde, the existence of trans-acetalization has significant effect on the design and optimization of reversible reaction intensified separation method for EG recovery in syngas-based EG ...
Xingang LI, Yutao YAN, Rui WANG, Hong LI, Xin GAO   +4 more
doaj  

Activating oxidative desulfurization and acetalization performance over metal-organic frameworks by introducing Fe single-atom under solvent-free conditions

Nano Research
The utilization of green synthesis techniques for the fabrication of multipurpose single-atom catalysts offers new opportunity to enable a single catalyst to be employed in multiple target applications.
Gan Ye, Ruodi Huang, Hongbo Wang, Hao Chen, Jun Zhou, Qiuli Zhang, Jin Wang   +6 more
doaj   +1 more source

Progress in Biodegradable Nonwoven Materials for Personal Protective Applications

Macromolecular Materials and Engineering, Volume 311, Issue 8, August 2026.
ABSTRACT Personal protective equipment generates large waste streams, underscoring the need for materials that deliver protection without persistent environmental costs. This study reviews biodegradable nonwoven options and relates material choice and disposal routes to barrier performance, comfort, and footprint.
Tarikul Islam, Sayam, Pooja Maurya, Gajanan Bhat   +3 more
wiley   +1 more source

(3-Nitrophenyl)methanediyl diacetate

Acta Crystallographica Section E, 2008
In the title compound, C11H11NO6, only weak van der Waals interactions are found in the molecular packing. The compound is an efficient catalyst for the acetalization of the carbonyl group of aldehydes in nearly quantative yield.
Alireza Abbasi, Shima Ghorbi, Alireza Badiei, Fatemeh Shahjafari, Ghodsi Mohammadi Ziarani   +4 more
doaj   +1 more source

Iminodirhodium‐ and Iminocopper‐Catalyzed CH Activation: Chemoselective Oxidation of Alcohols and Aldehydes via Intermolecular Hydride Abstraction

European Journal of Organic Chemistry, Volume 29, Issue 25, 4 July 2026.
Chemoselective hydride abstractor iminometalloids, derived from O‐mesylacetoxime (MAO) using Rh2(II/II) or Cu(I) catalysts, can activate the C–Hα bonds of alcohols and aldehydes ultimately forming ketones, carboxylic acids, and esters even in the presence of C–H bonds with comparable bond strengths.
Raghunath Reddy Anugu, John R. Falck, Adeniyi M. Adebesin   +2 more
wiley   +1 more source

The Acetate Switch [PDF]

Microbiology and Molecular Biology Reviews, 2005
SUMMARYTo succeed, many cells must alternate between life-styles that permit rapid growth in the presence of abundant nutrients and ones that enhance survival in the absence of those nutrients. One such change in life-style, the “acetate switch,” occurs as cells deplete their environment of acetate-producing carbon sources and begin to rely on their ...
openaire   +2 more sources