Mono- and diselenylated fluorescein Derivatives: Synthesis using arylseleninic acids as selenylating agents and application as fluorescent probes DOI

Kethelyn M. da Rosa,

Nicole M.N. Washio,

Samara de Quadros

и другие.

Journal of Molecular Liquids, Год журнала: 2024, Номер 416, С. 126528 - 126528

Опубликована: Ноя. 18, 2024

Язык: Английский

tert‐Butyl Nitrite‐Mediated Deaminative Chalcogenation of Substituted 5‐Aminopyrazoles via Diaryl Dichalcogenides DOI

Farman Moh Abbasi,

Aritra Ghosh,

Ruchir Kant

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(21)

Опубликована: Май 31, 2025

Abstract An expedited route to the synthesis of substituted 5‐(arylselanyl)‐1 H ‐pyrazoles and 5‐(arylthio)‐1 via reaction between 5‐amino‐1 bearing an electron withdrawing group (EWG) at C‐4 diaryl dichalcogenides in presence tert ‐butyl nitrite is described. The protocol compatible with substrates different EWGs, such as carboxylate, nitrile or phenylsulfonyl. strategy works even ‐1,2,3‐triazoles furnish corresponding chalcogenides. mechanism postulated involve a radical pathway.

Язык: Английский

Процитировано

0
Competing electrophilic substitution and oxidative polymerization of arylamines with selenium dioxide DOI Creative Commons

Vishnu Selladurai,

Karuthapandi Selvakumar

Beilstein Journal of Organic Chemistry, Год журнала: 2024, Номер 20, С. 1221 - 1235

Опубликована: Май 27, 2024

This article describes the detailed analysis of reaction between arylamines, such as aniline, o -anisidine, and methyl anthranilate, with selenium dioxide in acetonitrile. A systematic products help 77 Se NMR single-crystal X-ray crystallography revealed that progress follows three major pathways, electrophilic selenation, oxidative polymerization, solvent oxidation. For aniline predominant polymerization occurred, leading to formation respective polyaniline polymers products. was suppressed due delocalization amine lone pair electrons over adjacent carboxylate function, which prompted selenation pathway, two isomeric diorganyl selenides anthranilate. The diaryl were structurally characterized using diffraction. Density functional theory calculations suggest highest occupied molecular orbital anthranilate deeply buried, pathway. Due oxidation, oxamide also noticed a considerable extent. study provides utmost care must be exercised while SeO 2 an electrophile source aromatic substitution reactions.

Язык: Английский

Процитировано

1
Recent Advances in the Synthesis of Organic Thiocyano (SCN) and Selenocyano (SeCN) Compounds, Their Chemical Transformations and Bioactivity DOI Creative Commons
Rodrigo Abonı́a, Daniel Insuasty, Juan‐Carlos Castillo

и другие.

Molecules, Год журнала: 2024, Номер 29(22), С. 5365 - 5365

Опубликована: Ноя. 14, 2024

New approaches for the synthesis of organic thio- and selenocyanates, methods to incorporate them into more complex structures, including a wide variety heterocyclic polycylic derivatives, are reviewed. Protocols that convert SCN SeCN moieties thio seleno derivatives by transforming cyano group also examined. In representative cases, bioactivity data these classes compounds

Язык: Английский

Процитировано

1
Transition metal-free approach to the direct C–H selenocyanation of 2-iminothiazolines via in situ generated triselenodicyanide DOI

Umang Pithadiya,

Jignesh Mehariya,

Vaibhav D. Prajapati

и другие.

Tetrahedron, Год журнала: 2024, Номер unknown, С. 134434 - 134434

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

1
Mono- and diselenylated fluorescein Derivatives: Synthesis using arylseleninic acids as selenylating agents and application as fluorescent probes DOI

Kethelyn M. da Rosa,

Nicole M.N. Washio,

Samara de Quadros

и другие.

Journal of Molecular Liquids, Год журнала: 2024, Номер 416, С. 126528 - 126528

Опубликована: Ноя. 18, 2024

Язык: Английский

Процитировано

0