Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Valeriy V. Alekseyev"'
Autor:
Valeriy V. Alekseyev, Kirill N. Zelenin, Jari Sinkkonen, I. V. Lagoda, Abdul-Kadir A. Potapov, Kalevi Pihlaja
Publikováno v:
Tetrahedron. 59:1939-1950
In this work 32 1,2,3,4-tetrahydroquinazoline derivatives were synthesized by the reaction of 2-aminomethylaniline with aldehydes and ketones and their ring-chain tautomerism studied by 1H, 13C and 15N NMR spectroscopy. The ketone, as well as the alk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b776abc69b0289fe5382221d784c3c1d
https://doi.org/10.1016/s0040-4020(03)00148-0
https://doi.org/10.1016/s0040-4020(03)00148-0
Autor:
Kalevi Pihlaja, Valeriy V. Alekseyev, Jari Sinkkonen, I. V. Lagoda, Kirill N. Zelenin, Roustem A. Shaikhutdinov
Publikováno v:
Journal of Heterocyclic Chemistry. 39:805-810
A universal scheme is proposed for the molecular design of heterocyclic recyclizations by replacing the exocyclic hydroxyl groups in exo-trig- ring-chain tautomeric molecules with substituted amines or hydrazines. The practical applicability of this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33c9574c1789b678951739dc09c514c3
https://doi.org/10.1002/jhet.5570390428
https://doi.org/10.1002/jhet.5570390428
Publikováno v:
Russian Chemical Bulletin. 51:205-221
A classification and methodology of molecular design of ring—chain—ring (ring—ring) tautomeric systems by superposition of ring—chain equilibria in a structure of one molecule are considered.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa722efb0af8e694364c4b34c00ecb49
https://doi.org/10.1023/a:1015419321855
https://doi.org/10.1023/a:1015419321855
Publikováno v:
Organic Preparations and Procedures International. 30:53-61
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0e8c139c7f2c7dc3a3276f81caf7578
https://doi.org/10.1080/00304949809355259
https://doi.org/10.1080/00304949809355259
Autor:
V. N. Torocheshnikov, Olga B. Kuznetsova, K. N. Zelenin, L. A. Khorseeva, Valeriy V. Alekseyev
Publikováno v:
Tetrahedron. 49:5327-5332
Thiosemicarbazones of alkanals and their 4-substituted derivatives generate in trifluoroacetic acid the three-component equilibrium between one linear and two cyclic (1,3,4-thiadiazolidine and 1,2,4-triazoline) forms.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1838772f1a7e65d5ff6e917598e59fc5
https://doi.org/10.1016/s0040-4020(01)82381-4
https://doi.org/10.1016/s0040-4020(01)82381-4
Autor:
K. N. Zelenin, Valeriy V. Alekseyev, Olga B. Kuznetsova, Vladimir V. Ovcharenko, V. N. Torocheshnikov, Peter B. Terentyev
Publikováno v:
Tetrahedron. 49:1257-1270
The condensation products from 4,4-dimethyl- and 2,4,4-trimethylthiosemicarbazides and aldehydes or ketones, as well as those from 2-methyl- and 2,4-disubstituted thiosemicarbazides and aldehydes have the thiosemicarbazone structure, while ketones re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5166be5e87793916ae82bf649bbeb101
https://doi.org/10.1016/s0040-4020(01)85816-6
https://doi.org/10.1016/s0040-4020(01)85816-6
Autor:
Olga B. Kuznetsova, Valeriy V. Alekseyev, L. A. Khorseeva, K. N. Zelenin, V. N. Torocheshnikov
Publikováno v:
ChemInform. 24
Thiosemicarbazones of alkanals and their 4-substituted derivatives generate in trifluoroacetic acid the three-component equilibrium between one linear and two cyclic (1,3,4-thiadiazolidine and 1,2,4-triazoline) forms.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c32b691ba4f2c39de91c7d97c5e21857
https://doi.org/10.1002/chin.199344130
https://doi.org/10.1002/chin.199344130
Autor:
V. N. Torocheshnikov, K. N. Zelenin, Valeriy V. Alekseyev, Olga B. Kuznetsova, Peter B. Terentyev, Vladimir V. Ovcharenko
Publikováno v:
ChemInform. 24
The condensation products from 4,4-dimethyl- and 2,4,4-trimethylthiosemicarbazides and aldehydes or ketones, as well as those from 2-methyl- and 2,4-disubstituted thiosemicarbazides and aldehydes have the thiosemicarbazone structure, while ketones re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4942441f64a2be00cb6bd303303b4d00
https://doi.org/10.1002/chin.199323197
https://doi.org/10.1002/chin.199323197
Publikováno v:
ChemInform. 29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7c0e695da747cea307ab1e560d994e1
https://doi.org/10.1002/chin.199824134
https://doi.org/10.1002/chin.199824134
Publikováno v:
ChemInform. 33
A classification and methodology of molecular design of ring—chain—ring (ring—ring) tautomeric systems by superposition of ring—chain equilibria in a structure of one molecule are considered.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fedf487ef8a601543e628428fb3fef3b
https://doi.org/10.1002/chin.200236291
https://doi.org/10.1002/chin.200236291