Reactions of beta-carbonyl-substituted 4H-chromenes and 1H-benzo[f]chromenes with 5-aminopyrazoles

Reactions of beta-carbonyl-substituted 4H-chromenes and 1H-benzo[f]chromenes with 5-aminopyrazoles

A method for the preparation of pyrazolo[1,5-a]pyrimidines containing a 2-hydroxybenzyl or (2-hydroxynaphthalen-1-yl)methyl group in position 6 based on the reaction of beta-carbonyl-substituted 4H-chromenes and their benzo analogs with 5-aminopyrazoles is proposed. A new type of ring-chain tautomer...

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Bibliografiske detaljer
Главные авторы:	Demidov, O. P., Демидов, О. П.
Format:	Статья
Udgivet:	Springer 2021
Fag:	5-amino-1H-pyrazoles 1H-benzo[f]chromene beta-carbonyl-substituted chromene 4H-chromene Pyrazolo[1,5-a]pyrimidines Aza-Michael reaction (3+3) cyclocondensation Tautomerism
Online adgang:	https://dspace.ncfu.ru/handle/20.500.12258/18459
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Lignende værker

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A [4+2] cycloaddition of push-pull styrenes to 1,2-naphthoquinone 1-methides: a synthesis of 2-aryl-2,3-dihydro-1H-benzo[f]chromenes
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New Heterocyclisation Reactions of 5-Amino-3-(cyanomethyl)-1H-pyrazole-4-carbonitrile with Some 1,3-Dielectrophilic Agents
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A facile approach to the synthesis of 3,4-dihydro-2H-benzo[4,5]imidazo[2,1-b][1,3,4]thiadiazines
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Synthesis of New 18-Membered Macrocycles by Cyclocondensation of Hydrazono Hydrazides of the Pyrazole Series
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Reactions of malononitrile dimer with isothiocyanates
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Synthesis and analgesic activity of new heterocyclic cyanothioacetamide derivatives
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1,6-Diamino-2-oxopyridine-3,5-dicarbonitrile Derivatives in the Mannich Reaction
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Regioselective Nitration of (2E)-3-Aryl-2-(4-arylthiazol-2-yl)acrylonitriles
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Бромирование функциональных производных цианотиоацетамида
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Pseudo-five-component stereoselective synthesis of highly functionalized 3-azabicyclo[3.3.1]nona-2,7-dienes
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[3 + 2]-Annulation of pyridinium ylides with 1-chloro-2-nitrostyrenes unveils a tubulin polymerization inhibitor
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Определение pH
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Определение pH теория и практика
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Synthesis of new functionalized 3,7-diazabicyclo[3.3.1]nonanes by aminomethylation of the Guareschi imides
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Unexpected result of thiophosphorylation of 6-aminopyrano[2,3-c]pyrazole-5-carbonitrile derivative
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α-Amino acid-assisted autoxidation of naphthalene proton sponge affording 1,4-naphthoquinone nitrogen derivatives
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Synthesis of 5-Aryl-4-sulfanylidene-2,3,4,5,6,8-hexahydro-7H-pyrido[3,2-e][1,3]thiazin-7-ones
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Synthesis of 2,2-Dimethyl-2,3-dihydropyrido[3′,2′:4,5]-thieno[3,2-d]pyrimidin-4(1H)-ones by Reaction of 3-Aminothieno[2,3-b]pyridine-2-carboxamides with Acetone
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Direct C-H functionalization of arenes in reactions with nitroalkanes and nitroalkenes in polyphosphoric acids
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Synthesis of new hyperbranched dendrimers with terminal cationic groups based on boltorn H20 polyester polyol
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