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Thiocarbamoyl derivatives of N-phenylpyrazolidines are converted under the influence of acidic agents to mixtures of tetrahydropyrimido[2,1-b]benzothiazoles
and 2-imino-3-aminoalkylbenzothiazoles and not only to tetrahydropyrimidobenzothiazoles, as previously assumed. The conditions
for the predominant formation of tetrahydropyrimidobenzothiazoles were found.
Deceased.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 228–233, February, 1980. 相似文献
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T. V. Glukhareva P. E. Kropotina M. F. Kosterina Yu. I. Nein E. V. Deeva Yu. Yu. Morzherin 《Chemistry of Heterocyclic Compounds》2007,43(1):76-81
The synthesis of 2,3,4,4a,5,6-hexahydro-6H-spiro[benzo[c]quinolizine-5,4′-pyrazol]-5′-ones has been achieved by the reaction
of 2-piperidinobenzaldehydes with 2-aryl-5-methyl-2,4-dihydropyrazol-3-one via the “tert-amino effect” mechanism.
On the 70th Birthday of Professor E. Lukevics.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 90–95, January, 2007. 相似文献
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E. V. Deeva T. V. Glukhareva N. A. Zybina Yu. Yu. Morzherin 《Russian Chemical Bulletin》2005,54(6):1537-1538
The reactions of 2-(3,5-dimethylpiperidino)benzaldehyde with Meldrum's acid and cyclohexane-1,3-dione occur as a tandem of
the Knoevenagel condensation and cyclization promoted by the tert-amino effect. The cyclization yields only one isomer with the axial hydrogen atoms in positions 4 and 4a of the benzoquinolizine
ring.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1492–1494, June, 2005. 相似文献
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V. L. Rusinov O. N. Chupakhin S. L. Deev T. S. Shestakova E. N. Ulomskii L. I. Rusinova O. I. Kiselev E. G. Deeva 《Russian Chemical Bulletin》2010,59(1):136-143
Nucleoside analogs containing hydroxybutyl, hydroxyethoxymethyl, allyloxymethyl, and propargyloxymethyl fragments were synthesized based on 1,2,4-triazolo[3,2-c][1,2,4]triazin-7-ones isosteric to purine bases. Some of the compounds obtained inhibit in vitro reproduction of influenza and respiratory syncytial virus infection. 相似文献
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Platonova A. Yu. Deeva E. V. Zimovets O. A. Shatunova D. V. El’tsov O. S. Slepukhin P. A. Glukhareva T. V. Morzherin Yu. Yu. 《Russian Chemical Bulletin》2011,60(5):961-964
Cyclization of 2-(4-R-piperidino)benzaldehydes with 5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one proceeding via tert-amino effect mechanism is stereoselective. Relative configuration of (3R*,4aS*,5R*)-2,3,4,4a,5,6-hexahydro-1H-benzo[c]quinolizine was established on the base of NMR spectroscopy data and X-ray analysis. 相似文献
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E. N. Ulomskiy N. R. Medvedeva A. V. Shchepochkin O. S. Eltsov V. L. Rusinov O. N. Chupakhin E. G. Deeva O. I. Kiselev 《Chemistry of Heterocyclic Compounds》2011,47(9):1164-1169
The reaction of 3-R-5-amino-1,2,4-triazoles with the ethyl ester of 2-fluoroacetoacetic acid gave 2-R-fluoro[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-ones. The reaction of a 3-R-1,2,4-triazolyl-5-diazonium salt with the ethyl ester of 2-fluoroacetoacetic acid and subsequent
cyclization of the triazolylhydrazones lead to 7-R-3-fluoro[1,2,4]triazolo[5,1-c][1,2,4]triazin-4(1H)-ones. 相似文献
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T. V. Glukhareva E. V. Deeva A. Yu. Platonova I. V. Geide M. I. Kodess Yu. Yu. Morzherin 《Russian Journal of Organic Chemistry》2009,45(5):743-754
The cyclization via the mechanism of “tert-amino effect” of 2-(4-R-piperidino)benzaldehydes with cyclic active methylene components (Meldrum’s acid, 1,3-cyclohexanedione, and N,N-disubstituted barbituric acids) proceeded stereoselectively giving spiro-joined 2,3,4,4a,5,6-hexahydro-1H-benzo[c]quinolizines with axially oriented hydrogen atoms in the positions 3 and 4a of the benzo[c]quinolizine ring. 相似文献
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