Search Results - "Vasilyev, Aleksander V."

Synthesis of α‑(Trifluoromethyl)styrenes and 1,3-Di(trifluoromethyl)indanes via Electrophilic Activation of TMS Ethers of (Trifluoromethyl)benzyl Alcohols in Brønsted Acids by Khoroshilova, Olesya V., Boyarskaya, Irina A., Vasilyev, Aleksander V.

“…TMS ethers of CF3-benzyl alcohols (and their heterocyclic analogues) undergo elimination of TMSOH molecule with the formation of α-(trifluoromethyl)­styrenes…”
Get full text

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 by Shershnev, Ivan A., Boyarskaya, Irina A., Vasilyev, Aleksander V.

“…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…”
Get full text

Michael Addition of 3-Oxo-3-phenylpropanenitrile to Linear Conjugated Enynones: Approach to Polyfunctional δ-Diketones as Precursors for Heterocycle Synthesis by Igushkina, Anastasiya V, Golovanov, Alexander A, Vasilyev, Aleksander V

“…Reaction of linear conjugated enynones, 1,5-diarylpent-2-en-4-yn-1-ones [Ar C≡CCH=CHC(=O)Ar ], with 3-oxo-3-phenylpropanenitrile (NCCH COPh) in the presence of…”
Get full text

Cyclization of 1-aryl-4,4,4-trichlorobut-2-en-1-ones into 3-trichloromethylindan-1-ones in triflic acid by Sokolov, Vladislav A, Golushko, Andrei A, Boyarskaya, Irina A, Vasilyev, Aleksander V

“…Trichloromethyl-substituted enones (1-aryl-4,4,4-trichlorobut-2-en-1-ones, ArCOCH=CHCCl 3 , CCl 3 -enones) undergo intramolecular transformation into…”
Get full text

AlBr3-Promoted stereoselective anti-hydroarylation of the acetylene bond in 3-arylpropynenitriles by electron-rich arenes: synthesis of 3,3-diarylpropenenitriles by Gorbunova, Yelizaveta, Ryabukhin, Dmitry S, Vasilyev, Aleksander V

“…Reactions of 3-arylpropynenitriles (ArC≡CCN) with electron-rich arenes (Ar′H, benzene and its polymethylated derivatives) under the action of aluminum bromide…”
Get full text

Synthesis of 1-Trifluorometylindanes and Close Structures: A Mini Review by Khoroshilova, Olesya V., Vasilyev, Aleksander V.

“…This review describes methods for the synthesis of 1-trifluomethylindanes and close structures, which are still quite rare and scarcely available compounds…”
Get full text

Synthesis of 3-Aryl-3-(Furan-2-yl)Propanoic Acid Derivatives, and Study of Their Antimicrobial Activity by Kalyaev, Mikhail V., Ryabukhin, Dmitry S., Borisova, Marina A., Ivanov, Alexander Yu, Boyarskaya, Irina A., Borovkova, Kristina E., Nikiforova, Lia R., Salmova, Julia V., Ul’yanovskii, Nikolay V., Kosyakov, Dmitry S., Vasilyev, Aleksander V.

“…Reactions of 3-(furan-2-yl)propenoic acids and their esters with arenes in Brønsted superacid TfOH affords products of hydroarylation of the carbon–carbon…”
Get full text

Superelectrophilic activation of N-aryl amides of 3-arylpropynoic acids: synthesis of quinolin-2(1H)-one derivatives by Ryabukhin, Dmitry S., Gurskaya, Larisa Yu, Fukin, Georgy K., Vasilyev, Aleksander V.

“…The superelectrophilic activation of N-aryl amides of 3-arylpropynoic acids by Bronsted superacids (CF3SO3H, HSO3F) or strong Lewis acids AlX3 (X=Cl, Br)…”
Get full text

Stereoselective Synthesis of Multisubstituted Cyclohexanes by Reaction of Conjugated Enynones with Malononitrile in the Presence of LDA by Igushkina, Anastasiya V, Golovanov, Alexander A, Boyarskaya, Irina A, Kolesnikov, Ilya E, Vasilyev, Aleksander V

“…Reaction of linear conjugated enynones, 1,5-diarylpent-2-en-4-yn-1-ones, with malononitrile in the presence of lithium diisopropylamide LDA, as a base, in THF…”
Get full text

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 by Lozovskiy, Stanislav V, Ivanov, Alexander Yu, Vasilyev, Aleksander V

“…3-Methylbuta-1,2-dien-1-ylphosphonic acid derivatives (phosphorylallenes) [X (O=)P-CR=C=CMe , X = Cl, OMe, NR , or SAr] undergo intramolecular cyclization into…”
Get full text

TfOH-Promoted Reaction of 2,4-Diaryl-1,1,1-Trifluorobut-3-yn-2-oles with Arenes: Synthesis of 1,3-Diaryl-1-CF₃-Indenes and Versatility of the Reaction Mechanisms by Zerov, Aleksey V, Kazakova, Anna N, Boyarskaya, Irina A, Panikorovskii, Taras L, Suslonov, Vitalii V, Khoroshilova, Olesya V, Vasilyev, Aleksander V

“…The TfOH-mediated reactions of 2,4-diaryl-1,1,1-trifluorobut-3-yn-2-oles (CF₃-substituted diaryl propargyl alcohols) with arenes in CH₂Cl₂ afford…”
Get full text

Synthesis of 5-arylacetylenyl-1,2,4-oxadiazoles and their transformations under superelectrophilic activation conditions by Puzanov, Andrey I, Ryabukhin, Dmitry S, Zalivatskaya, Anna S, Zakusilo, Dmitriy N, Mikson, Darya S, Boyarskaya, Irina A, Vasilyev, Aleksander V

“…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…”
Get full text

Generation of 1,2-oxathiolium ions from (arysulfonyl)- and (arylsulfinyl)allenes in Brønsted acids. NMR and DFT study of these cations and their reactions by Lozovskiy, Stanislav V, Ivanov, Alexander Yu, Khoroshilova, Olesya V, Vasilyev, Aleksander V

“…In strong Brønsted acids (CF SO H, FSO H, D SO ), (arysulfonyl)allenes (ArSO -CR =C=CR R ) and (arylsulfinyl)allenes (ArSO-CR =C=CR R ) undergo cyclization…”
Get full text

Alkenylation of Arenes and Heteroarenes with Alkynes by Boyarskiy, Vadim P, Ryabukhin, Dmitry S, Bokach, Nadezhda A, Vasilyev, Aleksander V

“…This review is focused on the analysis of current data on new methods of alkenylation of arenes and heteroarenes with alkynes by transition metal catalyzed…”
Get full text

Regiocontrolled Hydroarylation of (Trifluoromethyl)acetylenes in Superacids: Synthesis of CF3-Substituted 1,1-Diarylethenes by Alkhafaji, Haider M. H., Ryabukhin, Dmitry S., Muzalevskiy, Vasiliy M., Vasilyev, Aleksander V., Fukin, Georgy K., Shastin, Alexey V., Nenajdenko, Valentine G.

“…The reactions between aryl(trifluoromethyl)‐substituted alkynes and arenes in triflic and fluorosulfonic acids were investigated. These reactions proceeded 100…”
Get full text

Superelectrophilic activation of 5-hydroxymethylfurfural and 2,5-diformylfuran: organic synthesis based on biomass-derived products by Ryabukhin, Dmitry S, Zakusilo, Dmitry N, Kompanets, Mikhail O, A Tarakanov, Anton, Boyarskaya, Irina A, Artamonova, Tatiana O, Khohodorkovskiy, Mikhail A, Opeida, Iosyp O, Vasilyev, Aleksander V

“…The reaction of 5-hydroxymethylfurfural (5-HMF) with arenes in superacidic trifluoromethanesulfonic acid (triflic acid, TfOH) as the solvent at room…”
Get full text

Metal-free hydroarylation of the side chain carbon-carbon double bond of 5-(2-arylethenyl)-3-aryl-1,2,4-oxadiazoles in triflic acid by Zalivatskaya, Anna S, Ryabukhin, Dmitry S, Tarasenko, Marina V, Ivanov, Alexander Yu, Boyarskaya, Irina A, Grinenko, Elena V, Osetrova, Ludmila V, Kofanov, Eugeniy R, Vasilyev, Aleksander V

“…The metal-free reaction of 5-(2-arylethenyl)-3-aryl-1,2,4-oxadiazoles with arenes in neat triflic acid (TfOH, CF SO H), both under thermal and microwave…”
Get full text

Reactions of N,3-diarylpropiolamides with arenes under superelectrophilic activation: synthesis of 4,4-diaryl-3,4-dihydroquinolin-2(1H)-ones and their derivatives by Gurskaya, Larisa Yu, Belyanskaya, Diana S, Ryabukhin, Dmitry S, Nilov, Denis I, Boyarskaya, Irina A, Vasilyev, Aleksander V

“…The reaction of 3-aryl-N-(aryl)propiolamides with arenes in TfOH at room temperature for 0.5 h led to 4,4-diaryl-3,4-dihydroquinolin-2-(1H)-ones in yields of…”
Get full text

Solid-State 13C CP/MAS NMR for Alkyl-O-Aryl Bond Determination in Lignin Preparations by Evstigneyev, Edward I., Mazur, Anton S., Kalugina, Aleksandra V., Pranovich, Andrey V., Vasilyev, Aleksander V.

“…Several lignin preparations (Freudenberg lignin, Björkman lignin, and Pepper lignin), technical lignins (soda, soda-AQ, Kraft, Kraft-AQ, and hydrolysis),…”
Get full text

Synthesis of 2-(5H)-furanones by cyclization of alkyl allene carboxylates in triflic acid by Mammeri, Oussama Abdelhamid, Baranov, Ilia M., Ivanov, Alexandr Yu, Boyarskaya, Irina A., Vasilyev, Aleksander V.

“…Alkyl allene carboxylates [R2(R3)C=C=C(R1)–C(=O)OAlk] in Brønsted superacid CF3SO3H (triflic acid, TfOH) at room temperature or 70 °C for 30 min are cyclized…”
Get full text