Results 51 to 60 of about 1,875 (207)

Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco   +5 more
wiley   +1 more source

Controllable Chemodivergent Synthesis of α‐Trifluoromethyl Boronates and gem‐Difluoroalkenyl Boronates via Photoredox 1,2‐Boron Migratory Carbonylation

open access: yesChinese Journal of Chemistry, Volume 44, Issue 17, Page 2918-2926, 1 September 2026.
We have developed a visible‐light‐driven, transition‐metal‐free protocol for the chemodivergent borocarbonylation of trifluoromethyl styrenes which integrates radical 1,2‐boron migration, CO trapping, and intermolecular C–C bond formation into a single multicomponent cascade.
Xiao‐Fan Cui   +2 more
wiley   +1 more source

Synthesis of Polyfunctionalized Quinolines via the Sequence of Propargyl–Allenyl Isomerization and Aza-electrocyclization

open access: yes, 2016
Quinoline derivatives are important heterocyclic compounds because of their natural occurrence and applications in pharmaceutical fields. In this paper, a sequence of propargyl–allenyl isomerization and aza-electrocyclization for the synthesis of ...
Shimin Xu (2032816)   +2 more
core   +1 more source

Asymmetric synthesis of polyfunctionalized pyrrolidines and related alkaloids

open access: yes, 2004
This account describes our recent studies on the development of a general method of preparing polyfunctionalized pyrrolidine, indolizidine, pyrrolizidine and pyrrolo[1,2-a]azepines and their related ...
Minyan Tang (20116914)   +6 more
core   +1 more source

Noninnocent Deep Eutectic Solvents Enable Selective, Sustainable Nickel‐Catalyzed Cross‐Electrophile Couplings to Diarylmethanes

open access: yesChemSusChem, Volume 19, Issue 16, 27 August 2026.
Ni‐catalyzed cross‐electrophile coupling (XEC) of aryl iodides with benzyl chlorides proceeds efficiently in the deep eutectic solvent (DES) choline chloride/urea, replacing hazardous amide solvents. Under mild, aerobic, heterogeneous conditions, diarylmethanes form in up to 95% yield.
Andrea Nicola Paparella   +7 more
wiley   +1 more source

Stereospecific Synthesis of Polyfunctionalized Carbacephams Induced by Titanocene(III) Chloride

open access: yes, 2016
Enantiomerically pure N-substituted epoxyalkene-2-azetidinones reacted with titanocene monochloride to give stereospecifically polyfunctionalized bicyclic β-lactams.
Josefa Anaya (3033222)   +3 more
core   +1 more source

The polyfunctionality of Coptic Egyptian relative complementisers

open access: yesProceedings of the International Conference on Head-Driven Phrase Structure Grammar, 2014
The present study is concerned with the complex ways in which alternating relative complementisers in Coptic are employed as a morphological flagging device for unbounded dependencies in various types of relative clause constructions and wh questions.
Berthold Crysmann, Chris H. Reintges
openaire   +3 more sources

Retro‐Hetero‐Michael Addition Strategies in Organic Synthesis

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 32, 24 August 2026.
In this review, synthetic approaches to carbo‐ and heterocyclic compounds, including natural products, published in the last 15 years (2011–2025) which have either relied upon or included a retro‐hetero‐Michael addition step at any stage are discussed.
Dina Scarpi, Ernesto G. Occhiato
wiley   +1 more source

Pd/C‐Catalyzed Hydrogenation of CF3‐, CF2H‐, and CF2CO2Et‐containing Pyridines: A Robust Method for Highly Functionalized containing Piperidines

open access: yesAngewandte Chemie, Volume 138, Issue 34, 17 August 2026.
A robust and efficient method to access diversely functionalized fluorinated piperidines was developed. The approach features the hydrogenation of polysubstituted pyridines bearing CF3, CF2H, and CF2CO2Et substituents using an inexpensive, readily available heterogeneous Pd/C catalyst under air‐ and moisture‐tolerant conditions, offering an appealing ...
Thibaud Charvillat   +7 more
wiley   +1 more source

Heteroatom as a Promotor: Synthesis of Polyfunctionalized Benzenes and Naphthalenes

open access: yes, 2016
Construction of a new benzene via the electrocyclization of diene–allene is an efficient protocol to access polysubstituted benzenes from simple, readily available starting materials.
Yanpeng Xing (1643281)   +3 more
core   +1 more source

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