Results 61 to 70 of about 517 (172)

Photoinduced “Double Click” Cascade Offers Access to Complex Polyheterocycles from Readily Available Isatin-Based Photoprecursors

, 2016
The cascade photoassisted synthetic strategy for accessing complex N,O-polyheterocycles of unprecedented molecular architecture is developed. It is based on intramolecular cycloadditions of aza-o-xylylenes formed in situ via excited-state intramolecular ...
Andrei G. Kutateladze (1344246), Olga A. Mukhina (1344252), Kutateladze, Andrei G., Mukhina, Olga A., Cronk, William Cole, William Cole Cronk (2888768)   +5 more
core   +1 more source

Systematic Photoassisted Access to Designer Polyheterocycles via Modular Blocks and Scaffolding

Diverse polyheterocycles are accessed via scaffolded photoassisted synthesis involving decarboxylative aromatization of the primary photoproducts from intramolecular cycloadditions of azaxylylenes and tethered heteroaromatic unsaturated ...
Andrei G. Kutateladze (1344246), Ivan M. Novitskiy (2122903), Tina A. Holt (8751855)   +2 more
core   +1 more source

Metal-free regioselective tandem synthesis of diversely substituted benzimidazo-fused polyheterocycles in aqueous medium

, 2016
An operationally simple approach for the synthesis of diversely substituted benzimidazo-fused polyheterocycles under metal-free conditions in water has been described.
Verma, A. K., Mishra, P. K.
core   +1 more source

Thermal and Photoinduced Radical Cascade Annulation using Aryl Isonitriles: An Approach to Quinoline‐Derived Benzophosphole Oxides

Angewandte Chemie International Edition, Volume 63, Issue 30, July 22, 2024.
The synthesis of quinoline‐based benzophosphole oxides from ortho‐alkynylated aromatic phosphine oxides and aryl isonitriles is presented. These π‐extended benzophosphole oxides exhibit interesting photophysical and electrochemical properties. Abstract Herein, we present a radical cascade addition cyclization sequence to access quinoline‐based ...
Shyam Kumar Banjare, Lena Lezius, Elena S. Horst, Dirk Leifert, Constantin G. Daniliuc, Fatmah A. Alasmary, Armido Studer   +6 more
wiley   +1 more source

Polyheterocyclic Systems Incorporating Pyrazole, Thiophene, Thiazole, and Thiadiazole Moieties.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Kamal M. Dawood, Eman A. Ragab, Ahmad M. Farag   +2 more
openaire   +1 more source

Enhancing the Photocatalytic Activity via Direct Covalent Functionalization in Single‐Walled Carbon Nanotubes

Advanced Functional Materials, Volume 34, Issue 14, April 3, 2024.
The control on the direct functionalization of single‐walled carbon nanotubes with the organophotocatalyst PTH allowed the creation of hybrid materials with enhanced charge transfer properties able to overcome homogeneous counterparts in the photoreductive debromination of aromatic halides with a robust character toward the stability during operation ...
José Luis Nova‐Fernández, Daniel González‐Muñoz, Gustavo Pascual‐Coca, Mattia Cattelan, Stefano Agnoli, Raúl Pérez‐Ruiz, José Alemán, Silvia Cabrera, Matías Blanco   +8 more
wiley   +1 more source

Visible‐Light‐Driven Cyclizations

Advanced Synthesis &Catalysis, Volume 366, Issue 4, Page 635-697, February 20, 2024.
Abstract In recent years, the interest to develop cyclizations promoted by visible light has been gaining a lot of attention due to its sustainability aspect. In this review, we summarize the most important advances in this period by describing the methods used to generate different ring sizes, while focusing on the mechanistic details of these ...
Emilia Oueis, Mirella Elkadi, Ramon Rios
wiley   +1 more source

Pictet–Spengler-Based Multicomponent Domino Reactions to Construct Polyheterocycles

Pharmaceutical Fronts, 2023
Jun-Duo Hu, Li-Liang Huang, Huang-Di Feng   +2 more
doaj   +1 more source

Design and Synthesis of Conformationally Diverse Pyrimidine-Embedded Medium/Macro- and Bridged Cycles via Skeletal Transformation. [PDF]

Front Chem, 2022
Choi Y, Lee S, Kim H, Park SB.
europepmc   +1 more source

Ligand-controlled product selectivity in palladium-catalyzed domino post-Ugi construction of (spiro)polyheterocycles

, 2016
A novel diversity-oriented access to (spiro)polyheterocycles possessing two adjacent quaternary carbon stereocenters is described. By combining an Ugi 4-CR with Pd-catalysis, the possible mode of cyclization is controlled by the appropriate choice of ...
Sharma, Upendra Kumar, Li, Zhenghua, Van der Eycken, Erik, Jacobs, Jeroen, Van Meervelt, Luc, Sharma, Nandini   +5 more
core   +1 more source