Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Kirill S. Korzhenko"'
Publikováno v:
Reactions, Vol 3, Iss 4, Pp 625-633 (2022)
A new three-component condensation of β-ketonitriles, 4-fluorobenzaldehyde, and secondary cyclic amines was developed. A possible reaction mechanism has been proposed including Knoevenagel condensation followed by aromatic nucleophilic substitution.
Externí odkaz:
https://doaj.org/article/76cdcc862e53431a911e23af24ac19e5
Divergent Pathways for Reactions of 3-Formylchromone with Cyclic Secondary Amines in Alcoholic Media
Publikováno v:
SynOpen, Vol 03, Iss 04, Pp 164-168 (2019)
Abstract Reaction of 3-formylchromone with cyclic secondary amines in methanol results in (E)-2-methoxy-3-(R2N-methylene)chroman-4-ones, while use of ethanol leads to (E)-2-morpholino-3-(morpholinomethylene)chroman-4-one or enaminoketones as dihydr
Externí odkaz:
https://doaj.org/article/ad90589080864c56963f1b19d10d7f6b
Autor:
Kirill S. Korzhenko, Vitaly А. Osyanin, Dmitry V. Osipov, Darya А. Rashchepkina, Oleg P. Demidov, Yuri N. Klimochkin
Publikováno v:
Chemistry of Heterocyclic Compounds. 58:634-638
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbe642880fbf6bbaf989925563c588e9
https://doi.org/10.1007/s10593-022-03137-z
https://doi.org/10.1007/s10593-022-03137-z
Autor:
Dmitry V. Osipov, Kirill S. Korzhenko, Vitaly A. Osyanin, Pavel E. Krasnikov, Yuri N. Klimochkin
Publikováno v:
Chemistry of Heterocyclic Compounds. 58:651-655
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db341e56cd821c0aad2176c01d2ef528
https://doi.org/10.1007/s10593-022-03129-z
https://doi.org/10.1007/s10593-022-03129-z
Autor:
Vitaly A. Osyanin, Kirill S. Korzhenko, D. A. Rashchepkina, Yu. N. Klimochkin, Dmitry V. Osipov
Publikováno v:
Russian Journal of Organic Chemistry. 57:1053-1062
The reactions of 2-perfluoroacyl-1H-benzo[f]chromenes and 6,7-dimethyl-3-trifluoroacetyl-4H-chromene with primary aliphatic amines and ammonia afforded a series of enamino ketones containing a (2-hydroxynaphthalen-1-yl)methyl or 2-hydroxybenzyl subst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bcf0d3933bd09455dc971f4900121a2
https://doi.org/10.1134/s1070428021070046
https://doi.org/10.1134/s1070428021070046
Autor:
Kirill S. Korzhenko, Vitaly А. Osyanin, Dmitry V. Osipov, Yuri N. Klimochkin, Oleg P. Demidov
Publikováno v:
Chemistry of Heterocyclic Compounds. 57:588-593
A method for the preparation of pyrimido[1,2-a]benzimidazoles containing a 2-hydroxybenzyl or (2-hydroxynaphthalen-1-yl)methyl group at position 3 was proposed based on the reaction of β-carbonyl-substituted 4H-chromenes and their benzo analogs with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac7e2d909e7f3bca8a5e2e65e9cb1acf
https://doi.org/10.1007/s10593-021-02947-x
https://doi.org/10.1007/s10593-021-02947-x
Autor:
Oleg P. Demidov, Kirill S. Korzhenko, Yuri N. Klimochkin, Vitaly А. Osyanin, Dmitry V. Osipov
Publikováno v:
Chemistry of Heterocyclic Compounds. 57:305-313
A method for the preparation of pyrazolo[1,5-a]pyrimidines containing a 2-hydroxybenzyl or (2-hydroxynaphthalen-1-yl)methyl group in position 6 based on the reaction of β-carbonyl-substituted 4H-chromenes and their benzo analogs with 5-aminopyrazole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ba23e41b3fc76df3060c021334634d4
https://doi.org/10.1007/s10593-021-02908-4
https://doi.org/10.1007/s10593-021-02908-4
Publikováno v:
Chemistry of Heterocyclic Compounds. 57:217-223
The review summarizes the existing methods of the synthesis of 2-aminochromanes. N,O-acetals in which the dihydropyran ring is spiroannulated or condensed with any carbo- or heterocyclic fragment at the b or c bond are not considered in the review be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fc6c126ad58c7d96f3adca981b92df2
https://doi.org/10.1007/s10593-021-02896-5
https://doi.org/10.1007/s10593-021-02896-5
Autor:
Alina A. Artemenko, Vadim A. Shiryaev, Kirill S. Korzhenko, Oleg P. Demidov, Daria A. Rashchepkina, Dmitry V. Osipov, Vitaly A. Osyanin
Publikováno v:
Organic & Biomolecular Chemistry. 19:10156-10168
We have studied the [3 + 2]-cycloaddition of various N,N-cyclic azomethine imines to 3-nitrobenzofurans. This process is a rare example of their dearomatization. We have also extended this process to the related 3-nitro-4H-chromenes as dipolarophiles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb7c141beb08df477b7d4f4aee38cd82
https://doi.org/10.1039/d1ob01377g
https://doi.org/10.1039/d1ob01377g
Autor:
Kirill S. Korzhenko, Irina V. Melnikova, Dmitry V. Osipov, Irina A. Semenova, Yuri N. Klimochkin, Vitaly A. Osyanin
Publikováno v:
Synthesis. 52:3604-3621
A new strategy to 2-aminochromanes through catalyst-free cascade reaction of 3-trifluoroacetyl-4H-chromenes and 4H-chromene-3-carbaldehydes with cyclic secondary amines is presented. The reaction proceeds through subsequent 1,4- and 1,2-additions of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d37177a7c02605d323b2b4ca3ed4dd73
https://doi.org/10.1055/s-0040-1707209
https://doi.org/10.1055/s-0040-1707209