Results 51 to 60 of about 50,787 (146)
Bio‐Based Polyurethanes for Sustainable and Multifunctional Applications
Advanced 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
Relay Approach: A Convergent Synthesis of Key Fragments en route to (+)‐Neosorangicin A
Chemistry – 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
Stereoselective synthesis of the macrocyclic core of (-)-salicylihalamides A and B
, 2007 Stereoselective synthesis of the macrocyclic core of salicylihalamides A and B is described. The synthetic strategy features stereoselective iodolactonization, Sharpless asymmetric epoxidation, Mitsunobu esterification, and ring-closing ...
Sundar Ram Reddy, P., Yadav, J. S.
core +1 more source
Sulfur Mediated Allylic C-H Arylation, Epoxidation and Aziridination [PDF]
, 2019 Transition-metal-free, sulfur mediated allylic C-H arylation, epoxidation and aziridination were realized through one-pot procedures. The reaction design involved initial addition between olefins and triflic anhydride activated sulfoxides, followed by ...
Gang, Hu, Hang, Luo, Pingfan, Li
core +1 more source
Industrial catalytic processes intensification through the use of microreactors [PDF]
, 2011 The aim of this work was the intensification of two interesting industrial processes: 1. Biodiesel Production 2. Epoxidized Oils Production In the first case the reaction in traditional industrial reactors is strongly limited by mass transfer, due the ...
Turco, Rosa
core +1 more source
Journal 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
The 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
European 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
Switchable asymmetric bio-epoxidation of alpha,beta-unsaturated ketones
, 2016 Efficient asymmetric bio-epoxidation of electron-deficient alpha,beta-unsaturated ketones was realized via a tandem reduction-epoxidation-dehydrogenation cascade, which proceeds in a switchable manner to afford either chiral epoxy ketones or allylic ...
Liu, YC +2 more
core +1 more source
Total Synthesis of Sacrolide A and Cytotoxic Evaluation
European 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