Results 131 to 140 of about 31,532 (196)

Characteristics of Polyurethane Pyrolysis—Experimental Investigations and Product Analyses for the Assessment of Chemical Recycling Potentials

Journal of Applied Polymer Science, Volume 143, Issue 7, February 15, 2026.
This study provides insights into the pyrolysis characteristics of polyurethanes, supporting the development of sustainable chemical recycling strategies. Experiments on a lab scale reveal the crucial influence of polymer composition and pyrolysis temperature.
Michael Zeller, Lea Wattenberg, Pratistha Shrestha, Aylin Hannemann, Ankh‐Erdene Erdenepurev, Niklas Netsch, Britta Bergfeldt, Salar Tavakkol, Dieter Stapf   +8 more
wiley   +1 more source

A Photoredox Radical‐Polar Crossover Reaction for the Preparation of Monoprotected Dicarbonyl Compounds

European Journal of Organic Chemistry, Volume 29, Issue 6, 13 February 2026.
An ATRA‐based, Ru‐photocatalyzed radical‐polar crossover reaction for the preparation of monoprotected dicarbonyl compounds is reported. This procedure is based on the capture of a cationic intermediate, arising from the radical step, with diverse nucleophiles.
Derek Mota‐Hernández, Luis Antonio Vázquez‐López, Alejandro Cordero‐Vargas   +2 more
wiley   +1 more source

Genetic Encoding of a Trifunctional Photo‐Cross‐Linker with a Cleavable Alkyl Ester Moiety

ChemBioChem, Volume 27, Issue 3, 12 February 2026.
A novel noncanonical amino acid, DiZAAsu, possessing photo‐cross‐linking, biotinylation, and alkaline‐cleavable functionalities, is genetically encoded by an engineered pyrrolyl‐tRNA synthetase mutant. The alkyl ester moiety expands the design space of cleavable photo‐cross‐linkable amino acids.
Masahiro Takayama, Tomoya Tsubota, Takao Yamaguchi, Kosuke Chiba, Takumi Yoshida, Yoshiyuki Hari, Yu‐Shi Tian, Daisuke Takaya, Asuka Mori, Tomohito Tsukamoto, Kenji Ishimoto, Yukio Ago, Yoshiaki Okada, Kensaku Sakamoto, Takefumi Doi, Kaori Fukuzawa, Satoshi Obika, Shinsaku Nakagawa, Nobumasa Hino   +18 more
wiley   +1 more source

Synergistic Effects of Electricity and Light for Efficient Iron‐Catalyzed Recycling of Polystyrene Waste

Angewandte Chemie International Edition, Volume 65, Issue 7, 9 February 2026.
The synergistic interplay of electricity, light and earth‐abundant, nontoxic iron catalysis allowed for the efficient recycling of post‐consumer polymers into value‐added products. This robust depolymerization strategy was viable on multigram‐scale, where the cathodic hydrogen evolution reaction presents an attractive opportunity for a green hydrogen ...
Maxime Hourtoule, Piotr Skumial, Sven Trienes, Hasret Can Gülen, Jian Zhang, Lutz Ackermann   +5 more
wiley   +1 more source

Alkynyltriazenes in Photochemical Metal‐Free Doyle–Kirmse Rearrangements

Angewandte Chemie International Edition, Volume 65, Issue 7, 9 February 2026.
A metal‐ and additive‐free photocatalytic Doyle–Kirmse reaction of alkynyl triazenes is described, proceeding via cyanocarbene intermediates. This strategy enables the efficient construction of highly substituted asymmetric carbon centers with broad substrate scope, delivering synthetically valuable nitriles.
Ningning Liu, Linus Bjarne Dittmer, Melina Maag, Elena Michel, Frank Rominger, Matthias Rudolph, Andreas Dreuw, A. Stephen K. Hashmi   +7 more
wiley   +1 more source

Strain‐Release Diversification of 1‐Azabicyclobutanes via Bromide/Nickel Relay Catalyzed 1,3‐Bis‐Carbofunctionalization

Angewandte Chemie International Edition, Volume 65, Issue 7, 9 February 2026.
A four‐component synthesis of azetidines with an all‐carbon quaternary center via strain‐release 1,3‐bis‐carbofunctionalization of 1‐azabicyclobutanes (ABB) is described. Each reaction component can be modified to permit a high‐throughput‐like library preparation, producing azetidines with various appendages, including biorelevant molecules.
Yi‐Hua Lee, Che‐Ming Hsu, Shinje Miñoza, Ya‐Fang Shih, Yu‐Chun Ding, Tzu‐Yao Hsu, Song‐Ting Chen, Kuei‐Chen Chang, Wen‐Hsuan Lee, Yuya A. Lin, Hsuan‐Hung Liao   +10 more
wiley   +1 more source

Exploring the Uncharted Indolizine Chemical Space: Construction of 5‐Acylindolizines via a Domino Aldol–Vinylogous Aldol Process

Advanced Synthesis &Catalysis, Volume 368, Issue 3, 3 February 2026.
A domino aldol condensation–intramolecular vinylogous aldol condensation process was implemented for the first time to enable access to a wide range of novel 5‐acylated indolizines with a hydrogen, an alkyl, an aryl, or an alkoxy moiety at the C7 site.
Dohui Ku, Sunhee Lee, Ikyon Kim
wiley   +1 more source

Rhodium Multitasking Catalysis Integrating Long‐Range Isomerization, Cycloisomerization, and Hydrosilylation of 1,n‐Dienes to Give 2,3‐Disubstituted Dihydrobenzofurans: Mechanistic Insight Into Functionalization‐Controlled Reactivity

Advanced Synthesis &Catalysis, Volume 368, Issue 3, 3 February 2026.
We discovered a rhodium catalyst that performs sequential long‐range isomerization, cycloisomerization, and hydrosilylation of 1,n‐dienes to yield silylated 2,3‐disubstituted dihydrobenzofurans. This unprecedented multitasking system also demonstrates that the choice of hydrosilylation reagent significantly affects the alkene‐isomerization equilibrium,
Masaharu Takatsuki, Yuta Sato, Tsuyoshi Matsuzaki, Makoto Sako, Atsushi Nakayama, Takeyuki Suzuki, Mitsuhiro Arisawa   +6 more
wiley   +1 more source

Stereospecific Transition‐Metal‐Free Alkylation of Chiral Non‐Racemic Secondary Tosylates with Cyanohydrins: Convenient Access to Enantiomerically Enriched α‐Tertiary Ketones

Angewandte Chemie, Volume 138, Issue 6, 2 February 2026.
A stereospecific, transition‐metal‐free SN2 alkylation of cyanohydrins with chiral non‐racemic secondary tosylates is reported, providing efficient access to enantioenriched α‐tertiary ketones. The method exhibits broad substrate scope, operational simplicity, and excellent stereospecificity, including stereoconvergent reactions of E/Z mixtures of ...
Jinjin Ma, Hui Li, Jadab Majhi, P. Andrew Evans   +3 more
wiley   +1 more source

Glucuronic Acid Derivatives in Enzymatic Biomass Degradation: Synthesis and Evaluation of Enzymatic Activity [PDF]

, 2016
d'Errico, Clotilde
core