Výsledky vyhledávání - "S. S. Hayotsyan"

Synthesis of pyridone-substituted furan-2(5H)-ones and their intramolecular cyclization to afford furo[3,4-f]isoquinolines

Autor: S. S. Hayotsyan, Gagik Melikyan, Robert M. Hakobyan, Hovhannes S. Attaryan

Publikováno v: Chemistry of Heterocyclic Compounds. 55:1245-1250

Synthetic approach toward pyridone-substituted furan-2(5H)-ones has been described. Intramolecular cyclization of these compounds leads to novel 7-substituted furo[3,4-f]isoquinolines in moderate to high yields.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4d1ce41fa365cb3aad1815e7c5cd4e0
https://doi.org/10.1007/s10593-019-02608-0

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Synthesis of Ethyl 5-(Arylcarbamoyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylates

Autor: Henry A. Panosyan, A. E. Badasyan, K. A. Avagyan, S. S. Hayotsyan, M. S. Sargsyan, A. A. Sargsyan, A. G. Ayvazyan, S. G. Kon’kova, A. Kh. Khachatryan

Publikováno v: Russian Journal of Organic Chemistry. 55:469-472

A one-step procedure has been developed for the synthesis of previously unknown ethyl 5-(arylcarbamoyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylates by reaction of ethyl 2-cyano-3-ethoxyprop-2-enoate with acetoacetanilides in the presence of a c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ccc9b6c7f2e8381492a4ae7e668e3ab9
https://doi.org/10.1134/s1070428019040080

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Synthesis of Substituted 1,2-Dihydropyridines by the Reaction of (Ethoxymethylidene)cyanoacetic Ester and Arylamides of Acetoacetic Acid

Autor: A. Kh. Khachatryan, S. S. Hayotsyan, M. S. Sargsyan, A. A. Sargsyan, S. G. Kon’kova, K. A. Avagyan, A. E. Badasyan

Publikováno v: Russian Journal of Organic Chemistry. 55:282-286

The reaction of (ethoxymethylidene)cyanoacetic ester with arylamides of acetoacetic acid proceeds under heating in the presence of triethylamine or at room temperature in the presence of sodium ethoxide. According to the NMR and IR data, the intermed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5fafb352b877a4c5c9eb3e4b172c96a0
https://doi.org/10.1134/s107042801902026x

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Aqueous N-methylmorpholine N-oxide as a new medium for alkylation of pyrazoles

Autor: S. S. Hayotsyan, G. B. Zakaryan, Hovhannes S. Attaryan, Ashkharuhi G. Alexanyan, H. N. Khachatryan, A. H. Hasratyan, G. G. Danagulyan

Publikováno v: Chemistry of Heterocyclic Compounds. 54:751-754

It is shown that alkylation of pyrazoles with (E)/(Z)-1,3-dichlorobut-2-enes can be carried out in an alkaline aqueous medium in the presence of N-methylmorpholine N-oxide. In some cases, this technique may substitute phase-transfer catalysis. Confor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ee4d3b62ef5fa0b57f528deb4262af7
https://doi.org/10.1007/s10593-018-2342-7

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Synthesis of substituted dihydropyridines by reacting ethoxymethylidenemalonate with malonic acid N-arylamidoesters

Autor: A. Kh. Khachatryan, S. S. Hayotsyan, A. A. Sargsyan, A. G. Hasratyan, S. G. Kon’kova, G. A. Panosyan, A. E. Badasyan, M. S. Sargsyan

Publikováno v: Russian Journal of General Chemistry. 86:2332-2337

Reactions of ethoxymethylidenemalonate with malonic acid N-arylamidoesters in the presence of triethylamine afforded diethyl 1-aryl-6-hydroxy-2-oxo-1,2-dihydropyridine-3,5-dicarboxylates via the cyclization of Michael adducts. In the presence of sodi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::de6a631fedfbf34934ebc15bfd82983d
https://doi.org/10.1134/s1070363216100145

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Synthesis of substituted 1,2-dihydropyridines by reaction of ethyl N-arylmalonamates with ethyl 2-(ethoxymethylidene)-3-oxobutanoate

Autor: A. Kh. Khachatryan, S. G. Kon’kova, S. S. Hayotsyan, M. S. Sargsyan, A. E. Badasyan, A. H. Hasratyan, A. A. Sargsyan

Publikováno v: Russian Journal of Organic Chemistry. 52:857-861

Michael addition of ethyl N-arylmalonamates to ethyl 2-(ethoxymethylidene)-3-oxobutanoate in ethanol in the presence of triethylamine at room temperature afforded the corresponding adducts which underwent cyclization to diethyl 1-aryl-6-methyl-2-oxo-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a5e46a8f4d66103fa634ffce624f0c7
https://doi.org/10.1134/s1070428016060166

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Alkylation of 3-nitro-1,2,4-triazole in aqueous alkaline medium in the presence of N-methylmorpholine N-oxide and verification of the structure of the reaction products

Autor: A. G. Ayvazyan, G. G. Danagulyan, S. S. Hayotsyan, Hovhannes S. Attaryan, Rafael Tamazyan, G. B. Zakaryan, Henrik A. Panosyan

Publikováno v: Chemistry of Heterocyclic Compounds. 52:253-256

It is shown that alkylation of 3-nitro-1,2,4-triazole with alkyl bromides may be carried out in an aqueous alkaline medium in the presence of N-methylmorpholine N-oxide. Alkylation of 3-nitro-1,2,4-triazole with dibromoethane and propargyl bromide oc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9833b7f2c52a7a98fe40764d8e76deeb
https://doi.org/10.1007/s10593-016-1870-2

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Cyclocondensation of 3-acetylfuran-2(5H)-ones with benzylidenemalononitrile. Synthesis of 3-(5-amino-4,6-dicyanobiphenyl-3-yl)furan-2(5H)-ones

Autor: Gagik Melikyan, S. S. Hayotsyan, R. M. Hakobyan

Publikováno v: Russian Journal of Organic Chemistry. 51:1809-1812

3,4-Disubstituted furan-2(5H)-one fragment is present in many natural biologically active compounds. In particular, furan-2(5H)-one derivatives containing nonidentical aromatic substituents in positions 3 and 4 of the furan ring exhibit various biolo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24dd046be1c4bdff9a03bcdbcd80946a
https://doi.org/10.1134/s1070428015120313

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