Results 41 to 50 of about 13,198 (167)

Enantioselective 1,3-Dipolar Cycloaddition Using (Z)-α-Amidonitroalkenes as a Key Step to the Access to Chiral cis-3,4-Diaminopyrrolidines

Molecules, 2022
The enantioselective 1,3-dipolar cycloaddition between imino esters and (Z)-nitroalkenes bearing a masked amino group in the β-position was studied using several chiral ligands and silver salts.
Eduardo García-Mingüens, Marcos Ferrándiz-Saperas, M. de Gracia Retamosa, Carmen Nájera, Miguel Yus, José M. Sansano   +5 more
doaj   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, Volume 36, Issue 87, 29 October 2026.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Kinetic Resolution of Alkylidene Norcamphors via a Ligand-Controlled Umpolung-Type 1,3-Dipolar Cycloaddition

iScience, 2019
Summary: Development of a general catalytic and highly efficient method utilizing readily available precursors for the regio- and stereoselective construction of bioactive natural-product-inspired spiro architectures remains a formidable challenge in ...
Chong Shen, Yuhong Yang, Liang Wei, Wu-Wei Dong, Lung Wa Chung, Chun-Jiang Wang   +5 more
doaj   +1 more source

Post‐Synthetic Functionalisation of Benzo[a]ullazines for Improving UV–Vis Absorption Profiles

ChemPhotoChem, Volume 10, Issue 10, October 2026.
Less accessible benzo[a]ullazines bearing several substituents have been successfully synthesised. Through their photophysical and electrochemical evaluation, the effects of substituting each carbon centre within this π‐system on their physical properties have been elucidated.
Hikaru Yanai, Teru Kawazoe, Yui Yamaguchi, Akira Kotani, Koichi Machida, Hideki Hakamata, Takashi Matsumoto   +6 more
wiley   +1 more source

The regioselective synthesis of spirooxindolo pyrrolidines and pyrrolizidines via three-component reactions of acrylamides and aroylacrylic acids with isatins and α-amino acids

Beilstein Journal of Organic Chemistry, 2014
The regioselective three-component condensation of azomethine ylides derived from isatins and α-amino acids with acrylamides or aroylacrylic acids as dipolarophiles has been realized through a one-pot 1,3-dipolar cycloaddition protocol.
Tatyana L. Pavlovskaya, Fedor G. Yaremenko, Victoria V. Lipson, Svetlana V. Shishkina, Oleg V. Shishkin, Vladimir I. Musatov, Alexander S. Karpenko   +6 more
doaj   +1 more source

Successive Azide and DNA Functionalization for Reversible and Controlled Association of Single‐Wall Carbon Nanotubes

Chemistry – A European Journal, Volume 32, Issue 35, 19 September 2026.
A newly synthesized bifunctional azide—diazonium linker allows robust one‐step introduction of azido groups to single‐wall carbon nanotubes. Versatility of the azido groups as reactive handles is demonstrated by further derivatization with 6‐carboxyfluorescein and oligonucleotides.
Razieh Moosavi, Tharun K. Kotammagari, Pia Damlin, Mikko Salomäki, Mika Lastusaari, Han Li, Tuomas Lönnberg   +6 more
wiley   +1 more source

Sulfur-Directed Asymmetric 1,3-Dipolar Cycloadditions of Azomethine Ylides with Enantiopure Sulfinimines^†,‡

, 2016
Sulfur-Directed Asymmetric 1,3-Dipolar Cycloadditions of Azomethine Ylides with Enantiopure Sulfinimines†,‡
Martín Martínez-Ripoll (2979219), Roberto Fernández de la Pradilla (2420758), Carlos Guerrero-Strachan (3040308), Alma Viso (1554940), Isabelle André (474016), Marta Alonso (287563)   +5 more
core   +1 more source

1,3-Dipolar Cycloaddition in the Preparation of New Fused Heterocyclic Compounds via Thermal Initiation

Molecules, 2016
This paper describes the synthesis of precursors with a benzo[b]furan skeleton for the intramolecular 1,3-dipolar cycloaddition of azomethine ylides prepared from N-substituted 3-allyl-aminobenzo[b]furan-2-aldehydes and secondary amines derived from α ...
Martin Porubský, Lukáš Tenora, Milan Potáček   +2 more
doaj   +1 more source

Stereoselective Synthesis of the Di-Spirooxindole Analogs Based Oxindole and Cyclohexanone Moieties as Potential Anticancer Agents

Molecules, 2021
A new series of di-spirooxindole analogs, engrafted with oxindole and cyclohexanone moieties, were synthesized. Initially, azomethine ylides were generated via reaction of the substituted isatins 3a–f (isatin, 3a, 6-chloroisatin, 3b, 5-fluoroisatin, 3c ...
Abdullah Mohammed Al-Majid, M. Ali, Mohammad Shahidul Islam, Saeed Alshahrani, Abdullah Saleh Alamary, Sammer Yousuf, M. Iqbal Choudhary, Assem Barakat   +7 more
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, Volume 38, Issue 51, 11 September 2026.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source