Results 41 to 50 of about 46,587 (96)

Catalyst in Basic Oleochemicals [PDF]

open access: yes, 2007
Currently Indonesia is the world largest palm oil producer with production volume reaching 16 million tones per annum. The high crude oil and ethylene prices in the last 3 – 4 years contribute to the healthy demand growth for basic oleochemicals: fatty ...
Abun Lie   +11 more
core   +3 more sources

Bio‐Based Polyurethanes for Sustainable and Multifunctional Applications

open access: yesAdvanced Science, Volume 13, Issue 50, 7 September 2026.
Bio‐based polyurethanes prepared from vegetable oils, lignin, and polysaccharides have attracted increasing interest as alternatives to fossil‐derived polyurethanes. This review summarizes recent progress in their chemistry, structural engineering, and advanced applications, highlighting the roles of feedstocks, chain‐segment design, dynamic covalent ...
Xin Li   +6 more
wiley   +1 more source

Chemically Modified Natural Substances Screening for Biofilms Inhibition and Biofouling Control

open access: yesChemical Engineering Transactions, 2018
Biofilms can be characterized as a microorganisms community attached to a surface and enveloped by an extra polymeric substances complex array in a moist environment.
M.D.G. Silva   +8 more
doaj   +1 more source

Relay Approach: A Convergent Synthesis of Key Fragments en route to (+)‐Neosorangicin A

open access: yesChemistry – A European Journal, Volume 32, Issue 32, 24 August 2026.
A selective synthesis of three key fragments of the antibiotically active (+)‐neosorangicin A is reported, providing a foundation for its convergent total synthesis and proof of strategy via a relay approach. ABSTRACT Herein, we report the synthesis of the three key fragments of the macrolide antibiotic (+)‐neosorangicin A, a compound exhibiting potent
Marvin Wenninger   +6 more
wiley   +1 more source

Biobased Polyurethane Films Based on Andiroba (Carapa guianensis) and Buriti (Mauritia flexuosa) Oil Polyols

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 30, August 10, 2026.
Polyurethane films were prepared from andiroba (Carapa guianensis) and buriti (Mauritia flexuosa) oil‐derived polyols, emphasizing their potential as bio‐based materials. UV–Vis analysis indicates the retention of carotenoid‐related chromophoric features within the polymer matrix.
João A. P. da Silva   +5 more
wiley   +1 more source

Dimethyl‐, Diethyl‐, and Propylene Carbonates: An Emerging Class of Green Solvents for Organic Synthesis

open access: yesThe Chemical Record, Volume 26, Issue 8, August 2026.
This review highlights recent advances in the use of organic carbonates, dimethyl carbonate (DMC), diethyl carbonate (DEC), and propylene carbonate (PC), as solvents in organic synthesis. Based on over seventy studies from the past 6 years, it shows their application in different organic reaction types, emphasizing their role in safer and more ...
Gabriela T. Quadros   +5 more
wiley   +1 more source

Epoxidation of Cashmeran and Unprecedented Rearrangement to an α‐Carbonyl δ‐Spirolactone

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 28, 25 July 2026.
A new strategy enables diastereoselective conversion of Cashmeran into a previously unknown α‐carbonyl δ‐spirolactone via epoxidation, Baeyer–Villiger oxidation, and acid‐catalyzed rearrangement. Structure and mechanism were confirmed by NMR, single crystal X‐ray diffraction, and computational studies. We report the epoxidation of Cashmeran followed by
Lukas Kell   +7 more
wiley   +1 more source

Advancing biomass valorization with zeolite catalysts: Focus on oxidative transformations

open access: yesSustainable Chemistry for the Environment
The catalytic upgrading of biomass into high-value platform chemicals offers a promising alternative to conventional fossil-based processes, driven by the need for safer, environmentally friendly, and energy-efficient technologies.
Foteini Zormpa   +2 more
doaj   +1 more source

Total Synthesis of Sacrolide A and Cytotoxic Evaluation

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 27, 17 July 2026.
Isolated from the edible cyanobacterium Aphanothece sacrum, sacrolide A is a highly potent antimicrobial and cytotoxic metabolite. Its total synthesis via a convergent strategy enabled accurate assessment of its effects on liver and colon cells, offering new insights into its bioactivity and potential health risks.
Priyanka Kataria   +7 more
wiley   +1 more source

What leads to direct epoxidation? An exhaustive DFT investigation of electrophilic oxygen mediated epoxidation of ethylene on Ag(100) [PDF]

open access: yes
Extensive research has contributed to a better understanding of the commercially important epoxidation reaction. Selectivity, a crucial aspect of this reaction, has re- ceived significant attention in both experimental and theoretical investigations. How-
Aathira, Nair, Kavita , Joshi
core   +2 more sources

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