Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Stanislav V. Lozovskiy"'
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
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 2897-2906 (2018)
In strong Brønsted acids (CF3SO3H, FSO3H, D2SO4), (arysulfonyl)allenes (ArSO2–CR1=C=CR2R3) and (arylsulfinyl)allenes (ArSO–CR1=C=CR2R3) undergo cyclization into the corresponding stable 1,2-oxathiolium ions, which were studied by means of NMR an
Externí odkaz:
https://doaj.org/article/44520c75deb34346aa46da5a5eb7a682
Autor:
Olesya V. Khoroshilova, Alexander V. Stepakov, S. V. Shmakov, Vitali M. Boitsov, Alexander S. Filatov, Anna G. Larina, Stanislav V. Lozovskiy, Stanislav I. Selivanov, Siqi Wang
Publikováno v:
Synthesis. 53:2114-2132
The multi-component 1,3-dipolar cycloaddition of ninhydrin, α-amino acids (or peptides), and cyclopropenes for the synthesis of spirocyclic heterocycles containing both 3-azabicyclo[3.1.0]hexane and 2H-indene-1,3-dione motifs has been developed. Thi
Autor:
Stanislav V. Lozovskiy
Publikováno v:
Chemistry of Heterocyclic Compounds. 56:848-853
The review considers the latest advances in the synthesis of heterocyclic compounds based on the reactions of allenes containing electronwithdrawing substituents with electrophiles. The material is grouped by the type of electron-withdrawing fragment
Publikováno v:
Advanced Synthesis & Catalysis. 362:3121-3125
Publikováno v:
Beilstein Journal of Organic Chemistry
Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 2897-2906 (2018)
Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 2897-2906 (2018)
In strong Brønsted acids (CF3SO3H, FSO3H, D2SO4), (arysulfonyl)allenes (ArSO2–CR1=C=CR2R3) and (arylsulfinyl)allenes (ArSO–CR1=C=CR2R3) undergo cyclization into the corresponding stable 1,2-oxathiolium ions, which were studied by means of NMR an
Upon heating methanol solutions, tosylpropadiene cycloadds to proline-derived ylides with the formation of pyrrolidine adducts as single diastereomers in 16���37% yields. The observed diastereo- and regioselectivity is reasoned by a concise DFT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fc34f0787a4c6186d0ae17fe00a0570
Autor:
Aleksander V. Vasilyev, Steve Saulnier, Irina A. Boyarskaya, Alexander A. Golovanov, Maiia I. Aleksandrova, Stanislav V. Lozovskiy
Publikováno v:
Organic & Biomolecular Chemistry. 16:7891-7902
Reactions of cross-conjugated enynones,1,5-diarylpent-1-en-4-yn-3-ones, with arenes in the system TfOH-pyridine or under the action of acidic zeolite HUSY lead regioselectively to products of hydroarylation of the acetylene bond only,1,1,5-triarylpen
Publikováno v:
Mendeleev Communications. 29:19-21
Arysulfonylallenes (ArSO2–CR1=C=CR2R3), depending on their structure, react with iodine to give two types of products, diiodo alkenes ArSO2–CHI–CI=CR2R3, when R1 = H, or iodo dienes ArSO2–CR1=CI–C(Me)=CH2, when R1 = Br, Ph and R2 = R3 = Me,
Autor:
Alexander A. Golovanov, Steve Saulnier, Alexander Yu. Ivanov, Aleksander V. Vasilyev, Stanislav V. Lozovskiy
Publikováno v:
European Journal of Organic Chemistry. 2017:3635-3645
In triflic acid or sulfuric acid, diaryl-substituted cross-conjugated enynones undergo addition of the acid to the carbon–carbon triple bond to afford the corresponding vinyl triflates or sulfates. The vinyl triflates are stable under aqueous worku