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| Description
| - The reaction of substituted phenyl isocyanates with 2-amino-2-phenylpropanenitrile and 2-amino-2-(4-nitrophenyl)propanenitrile has been used to prepare substituted 1-(1-cyanoethyl-1-phenyl)-3-phenylureas. In anhydrous phosphoric acid the first products to be formed from 1-(1-cyanoethyl-1-phenyl)-3-phenylureas are phosphates of 4-methyl-4-phenyl-2-phenylimino-5-imino-4,5-dihydro-1,3-oxazoles, which on subsequent hydrolysis give the respective ureidocarboxylic acids. On prolongation of the reaction time, the phosphates of 4-methyl-4-phenyl-2-phenylimino-5-imino-4,5-dihydro-1,3-oxazoles rearrange to give phosphates of 5-methyl-4-imino-3,5-diphenylimidazolidin-2-ones, and these are subsequently hydrolysed to the respective substituted 5-methyl-3,5-diphenylimidazolidin-2,4-diones. The ureidocarboxylic acids were also prepared by alkaline hydrolysis of 5-methyl-3,5-diphenylimidazolidin-2,4-diones. The 5-methyl-3,5-diphenylimidazolidin-2,4-diones and ureidocarboxylic acids were characterised by their H-1 and
- The reaction of substituted phenyl isocyanates with 2-amino-2-phenylpropanenitrile and 2-amino-2-(4-nitrophenyl)propanenitrile has been used to prepare substituted 1-(1-cyanoethyl-1-phenyl)-3-phenylureas. In anhydrous phosphoric acid the first products to be formed from 1-(1-cyanoethyl-1-phenyl)-3-phenylureas are phosphates of 4-methyl-4-phenyl-2-phenylimino-5-imino-4,5-dihydro-1,3-oxazoles, which on subsequent hydrolysis give the respective ureidocarboxylic acids. On prolongation of the reaction time, the phosphates of 4-methyl-4-phenyl-2-phenylimino-5-imino-4,5-dihydro-1,3-oxazoles rearrange to give phosphates of 5-methyl-4-imino-3,5-diphenylimidazolidin-2-ones, and these are subsequently hydrolysed to the respective substituted 5-methyl-3,5-diphenylimidazolidin-2,4-diones. The ureidocarboxylic acids were also prepared by alkaline hydrolysis of 5-methyl-3,5-diphenylimidazolidin-2,4-diones. The 5-methyl-3,5-diphenylimidazolidin-2,4-diones and ureidocarboxylic acids were characterised by their H-1 and (en)
- Reakcí substituovaných fenylisokyanátů s 2-amino-2-fenylpropannitrilem a 2-amino-2-(4-nitrofenyl)propannitrilem byly připraveny substituované 1-(1-fenyl-1-kyanethyl)-3-fenylmočoviny. V bezvodé kyselině fosforečné nejprve vznikají z 1-(1-fenyl-1-kyanethyl)-3-fenylmočovin fosfáty 4-fenyl-4-methyl-2-fenylimino-5-imino-4,5-dihydro-1,3-oxazolů, které následnou hydrolýzou poskytují příslušné ureidokarboxylové kyseliny. Prodloužením reakční doby dochází k přesmyku fosfátů 4-fenyl-4-methyl-2-fenylimino-5-imino-4,5-dihydro-1,3-oxazolů za vzniku fosfátů 5-methyl-4-imino-3,5-difenylimidazolidin-2-onů, které následně hydrolýzou poskytují odpovídající substituované 5-methyl-3,5-difenylimidazolidin-2,4-diony. Ureidokarboxylové kyseliny byly rovněž připraveny alkalickou hydrolýzou 5-methyl-3,5-difenylimidazolidin-2,4-dionů. 5-Methyl-3,5-difenylimidazolidin-2,4-diony a ureidokarboxylové kyseliny byly charakterizovány pomocí 1H, 13C NMR spektroskopie. Struktura 5-methyl-5-(4-nitrophenyl)-3-phenylimidazolidine-2, (cs)
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| Title
| - Synthesis of new substituted 5-methyl-3,5-diphenylimidazolidine-2,4-diones from substituted 1-(1-cyanoethyl-1-phenyl)-3-phenylureas
- Syntéza nových substituovaných 5-methyl-3,5-difenylimidazolidin-2,4-dionů ze substituovaných 1-(1-kyanethyl-1-fenyl)-3-phenylmočovin (cs)
- Synthesis of new substituted 5-methyl-3,5-diphenylimidazolidine-2,4-diones from substituted 1-(1-cyanoethyl-1-phenyl)-3-phenylureas (en)
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| skos:prefLabel
| - Synthesis of new substituted 5-methyl-3,5-diphenylimidazolidine-2,4-diones from substituted 1-(1-cyanoethyl-1-phenyl)-3-phenylureas
- Syntéza nových substituovaných 5-methyl-3,5-difenylimidazolidin-2,4-dionů ze substituovaných 1-(1-kyanethyl-1-fenyl)-3-phenylmočovin (cs)
- Synthesis of new substituted 5-methyl-3,5-diphenylimidazolidine-2,4-diones from substituted 1-(1-cyanoethyl-1-phenyl)-3-phenylureas (en)
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| skos:notation
| - RIV/00216275:25310/05:00003237!RIV08-GA0-25310___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00216275:25310/05:00003237
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - Base-catalysed cyclisation; proton-transfer; hydantoins; amides; acids (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Journal of Heterocyclic Chemistry
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Růžička, Aleš
- Sedlák, Miloš
- Hanusek, Jiří
- Keder, Roman
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| number of pages
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| http://localhost/t...ganizacniJednotka
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| is http://linked.open...avai/riv/vysledek
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