Zobrazeno 1 - 10 of 12 pro vyhledávání: '"M. A. Present"'
1
Chelate synthesis of 1,6-naphthyridin-4-ones
Autor: M. A. Present, Sergey V. Baranin, Yu. N. Bubnov
Publikováno v: Russian Chemical Bulletin. 70:1006-1009
An efficient synthesis of novel functionalized 1,6-naphthyridin-4-ones is based on cyclization of difluoroboron chelate complexes of 1-alkyl-N′-benzoyl-2-methyl-4-oxo-1,4-dihydro-pyridine-3-carboximidamide under the action of dimethylformamide dime
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::979d3d6d13e3fe0bd83ec228bbc546d3
https://doi.org/10.1007/s11172-021-3181-8
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2
Chelate method for the synthesis of 3-amidino-substituted 4-pyridones
Autor: M. A. Present, Sergey V. Baranin, Yu. N. Bubnov
Publikováno v: Russian Chemical Bulletin. 70:763-766
An efficient synthetic procedure to obtain 3-(N-benzoylamidino)-substituted 4-pyridones has been developed based on the reaction of difluoroboron complex of N-benzoyl-substituted diacylketene aminal with primary amines.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df7590b6140a3b92a4d8ac4ea8552042
https://doi.org/10.1007/s11172-021-3148-9
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3
Chelate synthesis of pyrazolyl(ethoxycarbonyl)ketene aminals, the precursors of functionalized pyrazolo[1,5-c]pyrimidines
Autor: V. S. Bogdanov, M. A. Present, V. A. Dorokhov
Publikováno v: Russian Chemical Bulletin. 43:2091-2094
A scheme for the preparation of novel synthetic reagents. pyrazolyl(ethoxycarbonyl)ketene aminals, from acetyl(ethoxycarbonyl)ketene (N-benzoyl)aminalvia its difluoroboron chelate is suggested. The possibility of cyclization of the ketene aminals obt
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb616bd869b319381e39cc20d2e2272d
https://doi.org/10.1007/bf00700177
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6
Ethyl 3,3-diamino-2-(2-p-tolylpyrimidin-4-yl)acrylate, a new representative of hetarylketene aminals
Autor: V. A. Dorokhov, V. S. Bogdanov, M. A. Present
Publikováno v: Russian Chemical Bulletin. 43:1550-1552
A new representative of hetarylketene aminals, ethyl 3,3-diamino-2-(2-p-tolylpyrimidin-4-yl)acrylate, was synthesized by the reaction ofp-toluamidine with the condensation product of dimethylformamide dimethyl acetal and the difluoroboron chelate of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::915be92b190fdc41685e119ed087bd58
https://doi.org/10.1007/bf00697147
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7
Chelate synthesis of 8-diaminomethylene-5,6,7,8-tetrahydroquinazoline-7-one derivatives
Autor: V. A. Dorokhov, M. A. Present
Publikováno v: Russian Chemical Bulletin. 43:832-834
A scheme for synthesizing 5,6,7,8-tetrahydroquinazoline systems from ketene aminal1 via its diphenylboron chelate2 has been suggested. The interaction ofp-toluamidine with the condensation product of the chelate with dimethylformamide dimethylacetal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::48f4c58966c850bd995641146d9d1b32
https://doi.org/10.1007/bf00717349
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10
In vivo marking of shallow-water and deep-sea amphipods by ingestion of bait mixed with fast green
Autor: C. R. Smith, T. M. C. Present
Publikováno v: Marine Biology. 73:183-192
Seven vital stains were mixed with fish muscle and fed to a sublittoral lysianassid (Orchomene sp. A collected in Scripps Canyon off La Jolla, California USA between August 1978 and August 1981) in the laboratory to test the utility of these dyes as
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8fb17ee1a3869f84e94380a4c893c740
https://doi.org/10.1007/bf00406887
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