Výsledky vyhledávání - "Triflic acid"

Akademický článek

Triflic acid-promoted Friedel–Crafts-type carbocyclization of alkenylated biphenyl derivatives: Synthesis and photophysical studies of novel 9,10-dihydrophenanthrenes

Autor: Samata E. Shetgaonkar, Himanshu Aggarwal, Toshitaka Shoji, Toshifumi Dohi, Fateh V. Singh

Publikováno v: Heliyon, Vol 10, Iss 15, Pp e35064- (2024)

An efficient metal-free, triflic acid-promoted intramolecular Friedel–Crafts-type carbocyclization of alkenylated biphenyl derivatives is discussed. This method provides an elegant route for the construction of 9,10-dihydrophenanthrenes of biologic

Externí odkaz: https://doaj.org/article/d20f0da62894440aa59938cbce419e10

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Akademický článek

Cyclization of 1-aryl-4,4,4-trichlorobut-2-en-1-ones into 3-trichloromethylindan-1-ones in triflic acid

Autor: Vladislav A. Sokolov, Andrei A. Golushko, Irina A. Boyarskaya, Aleksander V. Vasilyev

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 19, Iss 1, Pp 1460-1470 (2023)

Trichloromethyl-substituted enones (1-aryl-4,4,4-trichlorobut-2-en-1-ones, ArCOCH=CHCCl3, CCl3-enones) undergo intramolecular transformation into 3-trichloromethylindan-1-ones (CCl3-indanones) in Brønsted superacid CF3SO3H (triflic acid, TfOH) at 80

Externí odkaz: https://doaj.org/article/ce7b5046855f4a9f9394e1f3bc67b92b

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Akademický článek

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Akademický článek

Facile and diastereoselective arylation of the privileged 1,4-dihydroisoquinolin-3(2H)-one scaffold

Autor: Dmitry Dar’in, Grigory Kantin, Alexander Bunev, Mikhail Krasavin

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 18, Iss 1, Pp 1070-1078 (2022)

A practically convenient and streamlined protocol for the trans-diastereoselective introduction of an aryl substituent at position 4 of the 1,4-dihydroisoquinol-3-one (1,4-DHIQ) scaffold is presented. The protocol involves direct Regitz diazo transfe

Externí odkaz: https://doaj.org/article/ad00af4c01454a37b5affe0a8c6d42dd

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Akademický článek

Synthesis of 5-arylacetylenyl-1,2,4-oxadiazoles and their transformations under superelectrophilic activation conditions

Autor: Andrey I. Puzanov, Dmitry S. Ryabukhin, Anna S. Zalivatskaya, Dmitriy N. Zakusilo, Darya S. Mikson, Irina A. Boyarskaya, Aleksander V. Vasilyev

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 17, Iss 1, Pp 2417-2424 (2021)

Acetylene derivatives of 1,2,4-oxadiazoles, i.e., 5-(2-arylethynyl)-3-aryl-1,2,4-oxadiazoles, have been obtained, for the first time reported, from 5-(2-arylethenyl)-3-aryl-1,2,4-oxadiazoles by their bromination at the carbon–carbon double bond fol

Externí odkaz: https://doaj.org/article/1aa7b82667b44b478c0b5660f8da4ee0

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Akademický článek

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Akademický článek

5,5,5-Trichloropent-3-en-one as a Precursor of 1,3-Bi-centered Electrophile in Reactions with Arenes in Brønsted Superacid CF3SO3H. Synthesis of 3-Methyl-1-trichloromethylindenes

Autor: Ivan A. Shershnev, Irina A. Boyarskaya, Aleksander V. Vasilyev

Publikováno v: Molecules, Vol 27, Iss 19, p 6675 (2022)

Reactions of 5,5,5-trichloropent-3-en-2-one Cl3CCH=CHC(=O)Me with arenes in Brønsted superacid CF3SO3H at room temperature for 2 h–5 days afford 3-methyl-1-trichloromethylindenes, a novel class of indene derivatives. The key reactive intermediate,

Externí odkaz: https://doaj.org/article/c1b64796f959449fbcf0904f53c4a237

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Akademický článek

Reactions of 2-carbonyl- and 2-hydroxy(or methoxy)alkyl-substituted benzimidazoles with arenes in the superacid CF3SO3H. NMR and DFT studies of dicationic electrophilic species

Autor: Dmitry S. Ryabukhin, Alexey N. Turdakov, Natalia S. Soldatova, Mikhail O. Kompanets, Alexander Yu. Ivanov, Irina A. Boyarskaya, Aleksander V. Vasilyev

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 15, Iss 1, Pp 1962-1973 (2019)

Reactions of 2-carbonyl- and 2-hydroxy(or methoxy)alkylbenzimidazoles with arenes in the Brønsted superacid TfOH resulted in the formation of the corresponding Friedel–Crafts reaction products, 2-diarylmethyl and 2-arylmethyl-substituted benzimida

Externí odkaz: https://doaj.org/article/f130e5389a8d4768a91b3cb3db8220bb

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Akademický článek

Different reactivity of phosphorylallenes under the action of Brønsted or Lewis acids: a crucial role of involvement of the P=O group in intra- or intermolecular interactions at the formation of cationic intermediates

Autor: Stanislav V. Lozovskiy, Alexander Yu. Ivanov, Aleksander V. Vasilyev

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 15, Iss 1, Pp 1491-1504 (2019)

3-Methylbuta-1,2-dien-1-ylphosphonic acid derivatives (phosphorylallenes) [X2(O=)P–CR=C=CMe2, X = Cl, OMe, NR2, or SAr] undergo intramolecular cyclization into the corresponding 1,2-oxaphospholium ions in the Brønsted superacid TfOH. These cations

Externí odkaz: https://doaj.org/article/26694137ca044a04b3aff0b48fecc384

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Methanesulfonic Acid (MSA) in Hydrometallurgy

Autor: Peter Tom Jones, Koen Binnemans

Publikováno v: Journal of Sustainable Metallurgy. 9:26-45

This paper reviews the properties of methanesulfonic acid (MSA) and its potential for use in hydrometallurgy. Although MSA is much less known than sulfuric, hydrochloric or nitric acid, it has several appealing properties that makes it very attractiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::974fa3cb52c026854ef92bf5791bfec4
https://doi.org/10.1007/s40831-022-00641-6

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