Results 1 to 10 of about 174,335 (230)

Achieving international biodiversity targets: Learning from local norms, values and actions regarding migratory waterfowl management in Kazakhstan

open access: yesJournal of Applied Ecology, Volume 59, Issue 7, Page 1911-1924, July 2022., 2022
Here, we investigate how global conservation policy and local norms interact to affect the management of a threatened migratory species, which is particularly important for the protection and sustainable management of wildlife that crosses international borders where local contexts may differ.
Isabel L. Jones   +10 more
wiley   +1 more source

Synthesis and research of cis-trans isomerism for 5-(4-methoxybenzoyl)-6-(4-metoxyphenyl)-6,7-dihydro-5H-[1,2,3]triazolo[5,1-b][1,3,4]thiadiazine

open access: yesChimica Techno Acta, 2014
It was shown that the reaction of 1,2,3-4-methoxybenzaldehyde tiadiazolyl hydrazona and α-bromo-4-methoxyacetophenone in the presence of triethylamine allowes 5-(4-methoxybenzoyl)-6-(4-methoxyphenyl)-6,7-dihydro-5H-[1,2,3]triazolo[5,1-b][1,3,4 ...
T. A. Kalinina   +5 more
doaj   +1 more source

Триэтилортобензоат в реакциях с первичными аминами и азидом натрия

open access: yesЖурнал Белорусского государственного университета: Химия, 2023
Исследован процесс взаимодействия триэтилортобензоата с первичными аминами и азидом натрия. Установлено, что в отличие от ортоэфиров муравьиной, уксусной и монохлоруксусной кислот, гетероциклизация которых с первичными аминами и азидом натрия приводит к ...
Юрий Викторович Григорьев   +3 more
doaj   +1 more source

The synthesis and alkylation of p-tetrakischloro-calix[4]arene

open access: yesChimica Techno Acta, 2014
This work is devoted to the development of a chlorination of a calixarenes and a testing of the methods for their preparation to investigate the biological activity of the obtained compounds.
E. A. Ivanova   +2 more
doaj   +1 more source

Reaction of 4-acetyl-1,2,3-triazol-5-olate with hydrazine derivatives

open access: yesChimica Techno Acta, 2015
1,2,3-triazole attracts attention because of the ability opening ring to form α-diazoimin and intramolecular rearrangements with the formation of various heterocyclic systems.
I. S. Khazhieva   +2 more
doaj   +1 more source

Synthesis of 2-(5-arylidene-4-oxo-3-arylthiazolydine-2)-N-phenylethanthiamides derivatives from malondithioamides

open access: yesChimica Techno Acta, 2014
It is shown that thioacetamide are comfortable synthetic blocks for various heterocycles, including thiazole containing a double exocyclic bonds.
K. L. Obydennov   +2 more
doaj   +1 more source

Synthesis of 5-thiocarbomoyl- and 5-(thiazol-2-yl)-2,3,4,4a,5,6-hexahydro-1Н-pyrido[1,2-a]quinoline-5-carbonitriles

open access: yesChimica Techno Acta, 2015
The tert-amino effect cyclizations are an efficient and convenient route to synthetically as well as biologically important ring-fused tetrahydroquinolines. The method is operationally simple and highly diastereoselective.
A. A. Poluikova   +3 more
doaj   +1 more source

Chlorophenols in organic synthesis

open access: yesChimica Techno Acta, 2016
This article reviews the alternatives for modifications of p-chlorophenols, p-chloroanisoles with the formation of C-C, C-N, C-S and C-B bonds. It is worth noting the high fundamental as well as practical importance of these reactions due to the ...
V. V. Mitin   +3 more
doaj   +1 more source

МЕТОДОЛОГІЯ СИНТЕЗУ АВТОМАТИЗОВАНОЇ ІНФОРМАЦІЙНО-УПРАВЛЯЮЧОЇ СИСТЕМИ СИТУАЦІЙНОГО РОЗВІДУВАЛЬНО-УДАРНОГО КОМПЛЕКСУ

open access: yesЗбірник наукових праць Національної академії Державної прикордонної служби України. Серія: військові та технічні науки, 2020
У ході виконання  завдань із захисту державного суверенітету та територіальної цілісності виникають питання раціонального застосування наявних у суб’єктів забезпечення національної безпеки держави сил та засобів.
Юрій ДАНИК   +1 more
doaj   +1 more source

The production of novolac oligomers

open access: yesChimica Techno Acta, 2016
The paper presents the improvement of production technology of novolac phenol-formaldehyde oligo-mers by introducing the new scheme of capture of exhaust gases due to waste production, which leads to a reduction of costs and increase economic efficiency.
A. N. Galushchinsky, K. L. Obydennov
doaj   +1 more source

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