Results 121 to 130 of about 92,958 (217)

Reactions of 3-Formylchromone with Active Methylene and Methyl Compounds and Some Subsequent Reactions of the Resulting Condensation Products

Molecules, 2005
This review presents a survey of the condensations of 3-formylchromone with various active methylene and methyl compounds, e.g. malonic or barbituric acid derivatives, five-membered heterocycles, etc.
M. Lácova, R. Gasparová
doaj   +1 more source

Navigating Nitration Chemistry: A Practical Guide to Reagents, Mechanisms, and Selectivity

Angewandte Chemie, EarlyView.
This review highlights key contributions of modern nitration chemistry, emphasizing sustainable mechanistic platforms and comparing the performance of both organic and inorganic reagents across aromatic, ipso‐, olefin, alkyne, and heteroatom nitration. It provides the community with a clearer, unified perspective on current advances and facilitates the
Harry Lecomte, Anthony J. Fernandes, Dmitry Katayev   +2 more
wiley   +2 more sources

Acceptorless Dehydrogenative Polymerization

Angewandte Chemie, EarlyView.
Acceptor‐less dehydrogenative polymerization (ADP) enables the atom‐economic step‐growth synthesis of different type of polymers directly from simple alcohols, releasing H2 as the sole by‐product. This review outlines the mechanistic foundations, catalytic systems, and emerging polymer architectures of ADP, highlighting its potential as a sustainable ...
Xin Liu, Jessica L. Lathrop, Garret M. Miyake   +2 more
wiley   +2 more sources

Ring transformations in reactions of pyrimidine and N-alkylpyrimidinium salts with nucleophile [PDF]

Paper IOn treatment with liquid ammonia at -33°C, the quaternary pyrimidinium salts, i.e. 1-methylpyrimidinium methyl sulfate, 1,2-dimethylpyrimidinium iodide, 1,4,6-trimethyl-pyrimidinium iodide and 1,2,4,6-tetramethylpyrimidinium iodide demethylate ...
Oostveen, E.A.
core   +1 more source

Reactions of pyridazines and pyridazine 1-oxides with nitrogen-containing nucleophiles [PDF]

In dit proefschrift is een orienterend onderzoek beschreven naar het chemisch gedrag van halogeen-pyridazinen en halogeen-pyridazine-N-oxiden met kaliumamide in vloeibare ammoniak, met methanolische ammoniak en met vloeibare ammoniak. Dit onderzoek hangt
Klinge, D.E.
core   +1 more source

Trimerization of aromatic nitriles [PDF]

, 1977
Triazine compounds and cross-linked polymer compositions were made by heating aromatic nitriles to a temperature in the range of about 100 C to about 700 C, in the presence of a catalyst or mixture of catalysts.
Hsu, L. C.
core   +1 more source

Near‐Infrared‐Light‐Driven Photochemistry and Photocatalysis: Mechanisms, Recent Applications, and Opportunities in Organic Synthesis and Biology

Angewandte Chemie, EarlyView.
This minireview highlights recent advances in catalyst development and mechanistic strategies that enable photochemical and photocatalytic reactivity under 700–1000 nm NIR light, emphasizing how long‐wavelength excitation expands opportunities in both synthetic chemistry and biology.
Santosh K. Pagire, Wesley J. Olivier, Debabrata Maiti, Alex C. Bissember   +3 more
wiley   +1 more source

Scalable Access to N‑Acylindole Linkages: Enabling the Synthesis of Antitrypanosomal Noncanonical Cyclic Peptides for Chagas Disease

Angewandte Chemie, EarlyView.
A gram‐scale supply of bulbiferamide A, which features a rare N‐acylindole linkage and possesses potent inhibitory activity against Trypanosoma cruzi epimastigotes (IC50 = 4.1 µM)—the causative parasite of Chagas disease—was successfully achieved. Moreover, the cyclization strategy developed in this study facilitated the synthesis of noncanonical ...
Jie Zhang, Hugh Nakamura
wiley   +1 more source

Depolymerization and Reuse of Polycarbonates: Emerging Classes, Mechanisms and Challenges

Angewandte Chemie, EarlyView.
This review collects the latest developments in the area of chemical and catalytic polycarbonate recycling strategies and includes the controlled degradation of similar types of macromolecules. Apart from the main strategies for deconstruction, the key mechanistic features of these depolymerization processes are also discussed together with the ...
Davide Rigo, David H. Lamparelli, Antonio Buonerba, Carmine Capacchione, Arjan W. Kleij   +4 more
wiley   +1 more source

Photoenzymatic Hydroalkylation Enables Streamlined Access to Aryl Glutarimide Precursors

Angewandte Chemie, EarlyView.
We report a photoenzymatic hydroalkylation that enables streamlined, stereocontrolled access to aryl glutarimide precursors relevant to targeted protein degradation. Engineered flavin‐dependent “ene”‐reductases provide broad scope and high enantioselectivity through a distinct electron transfer–enantioselective proton transfer pathway.
Zhi Xu, Prasun Mukherjee, Steven Gossert, Stephen Thomas, Vasil H. Vasilev, Eric R. Welin, Yichen Tan, Shane M. McKenna, Megan A. Emmanuel, Todd K. Hyster   +9 more
wiley   +1 more source