Výsledky vyhledávání - "Yulia A. Khomutova"

Formal [3+3]-cycloaddition of 3-methyl-5,6-dihydro-4H-1,2-oxazine-N-oxides with cyclopropane dicarboxylates under hyperbaric conditions

Autor: Roman A. Novikov, Yulia V. Nelyubina, Yury V. Tomilov, Galina A. Stashina, Andrey A. Tabolin, Alexey A. Zharov, Yulia A. Khomutova, Sema L. Ioffe

Publikováno v: Tetrahedron Letters. 56:2102-2105

The [3+3]-cycloaddition of cyclopropane dicarboxylates with 3-methyl-5,6-dihydro-4H-1,2-oxazine-N-oxides promoted by Yb(OTf)3 under hyperbaric conditions is described. The substrates scope and reaction mechanism are discussed.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d9b886ec5fd4d473eaff114a17ccdfc
https://doi.org/10.1016/j.tetlet.2015.03.011

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A General Metal-Assisted Synthesis of α-Halo Oxime Ethers from Nitronates and Nitro Compounds

Autor: Vladimir A. Tartakovsky, Hyeong Ryool Park, Sema L. Ioffe, Alexey Yu. Sukhorukov, Tammy Lim Ting Yi, Petr A. Zhmurov, Maria A. Kapatsyna, Yulia A. Khomutova, Yana A. Naumovich

Publikováno v: European Journal of Organic Chemistry. 2014:8148-8159

An approach to the synthesis of α-halo oxime ethers from readily accessible nitronates and nitro compounds via bis(oxy)enamines is reported. A key step of the strategy involves the unprecedented reaction of bis(oxy)enamines with a metal (Co, Zn, Mg,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a20d408eb26d4358915d6cd69b3fbb9
https://doi.org/10.1002/ejoc.201403083

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Reactions of silyl nitronates with dimethylformamide dimethyl acetal as a new general procedure for the synthesis of 2-nitroenamines

Autor: Sema L. Ioffe, Alexander S. Shved, Yulia A. Khomutova, Andrey A. Tabolin

Publikováno v: Tetrahedron Letters. 55:6220-6223

Silyl nitronates obtained in situ from the corresponding aliphatic nitro compounds react with dimethylformamide dimethyl acetal giving 2-nitroenamines in moderate to good yields. The reaction pathway is discussed.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::688fd3efe467876a8cf40b98161cab6f
https://doi.org/10.1016/j.tetlet.2014.09.071

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Novel Formal [3+3] Cycloaddition of Silyl Nitronates with Activated Cyclopropanes and Its Application in the Synthesis of Pyrroline-N-oxides

Autor: Sema L. Ioffe, Alexander A. Korlyukov, Yury V. Tomilov, Dmitry E. Arkhipov, Roman A. Novikov, Andrey A. Mikhaylov, Yulia A. Khomutova, Andrey A. Tabolin

Publikováno v: Synlett. 25:2275-2280

1,1-Cyclopropane diesters with donor substituents undergo formal [3+3] cycloaddition with various silyl nitronates under Yb(OTf)3 catalysis in the presence of a proton scavenger to give target N-silyloxy tetrahydro-1,2-oxazines in 56–98% yield. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b6bffa9f214587fe173c283e710a23a
https://doi.org/10.1055/s-0034-1378564

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Urotropine Isomer (1,4,6,10-Tetraazaadamantane): Synthesis, Structure, and Chemistry

Autor: Vladimir A. Tartakovsky, Alexey Yu. Sukhorukov, Sema L. Ioffe, Artem N. Semakin, Yulia V. Nelyubina, Yulia A. Khomutova

Publikováno v: The Journal of Organic Chemistry. 79:6079-6086

The first synthesis of 1,4,6,10-tetraazaadamantane, the C3v-symmetrical structural isomer of urotropine (1,3,5,7-tetraazaadamantane), and a series of its derivatives is reported. X-ray and quantum-chemical studies revealed remarkable distinctions in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe9d38d20ae04efc44cdcb4127731146
https://doi.org/10.1021/jo5007703

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Six-Membered Cyclic Nitronates as 1,3-Dipoles in Formal [3 + 3]-Cycloaddition with Donor–Acceptor Cyclopropanes. Synthesis of New Type of Bicyclic Nitrosoacetals

Autor: Yulia V. Nelyubina, Evgenia O. Gorbacheva, Yulia A. Khomutova, Roman A. Novikov, Yury V. Tomilov, Andrey A. Tabolin, Sema L. Ioffe

Publikováno v: Organic Letters. 15:350-353

The first formal [3 + 3]-cycloaddition of nitronates with donor-acceptor cyclopropanes is reported. The reaction is catalyzed by ytterbium trifluoromethanesulfonate and leads to hitherto unknown bicyclic nitrosoacetals, possessing two annelated six-m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7a9b7dd479f57456a2b8b3c6ce59aac
https://doi.org/10.1021/ol303292c

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Synthesis of α-Prolinols and 2-Amino-1,5-diols from Primary Nitroalkanes and Other Simple Precursors via Intermediacy of 5,6-Dihydro-4H-1,2-oxazines

Autor: Sema L. Ioffe, A. V. Lesiv, Andrey A. Tabolin, Yulia A. Khomutova

Publikováno v: Synthesis. 44:1898-1906

A new strategy for the synthesis of 2-(1-hydroxyalkyl)pyrrolidines and 2-amino-1,5-diols is suggested. The target compounds can be obtained in high yields from available precursors through the intermediacy of six-membered cyclic nitronates and thei

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::239338ad75f6c9d976f0bb6651e3414c
https://doi.org/10.1055/s-0031-1290973

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C-C Coupling of Acyclic Nitronates with Silyl Ketene Acetals under Silyl Triflate Catalysis: Reactivity Umpolung of Aliphatic Nitro Compounds

Autor: Yulia A. Khomutova, Sema L. Ioffe, Vladimir A. Tartakovsky, Vladimir O. Smirnov

Publikováno v: European Journal of Organic Chemistry. 2012:3377-3384

TBSOTf-promoted C–C coupling of alkyl and trialkylsilyl nitronates with silyl ketene acetals yields functionalized nitroso acetals. This conversion may serve as a new simple procedure to reverse the conventional reactivity of aliphatic nitro compou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a3988a4ad4da50363f06038f9f0f055
https://doi.org/10.1002/ejoc.201200239

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Stereocontrolled Oxidation of Six-Membered Cyclic O-Silyl Nitroso Acetals with mCPBA: Umpolung Approach to Functionalized Nitro Compounds

Autor: Anastasia S. Naumova, Sema L. Ioffe, Yulia A. Khomutova, Vladimir A. Tartakovsky, Marina I. Struchkova, Andrey A. Mikhaylov

Publikováno v: European Journal of Organic Chemistry. 2012:2219-2224

Easily available, six-membered cyclic nitroso acetals 2 are smoothly oxidized with meta-chloroperbenzoic acid to δ-nitro alcohols 3 or γ-nitro carbonyl compounds 4 with the retention of their relative configurations of stereocenters (diastereomeric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e5a002a3267fab35905c494e0ebf273
https://doi.org/10.1002/ejoc.201101768

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