Results 171 to 180 of about 1,953 (209)

Polyfunctionally Pyrazole Azo Dyes

Pigment & Resin Technology, 1994
In recent years heterocyclic azo dyes have been the subject of an intense research by dye manufacturers. Even so, little has been devoted to technical properties, so we have recently directed our research activities towards studying the ability of thiazole azo and hydrazono disperse dyes for dyeing of polyester and cellulose acetate.
Y.M. ElKholy, S.A. Abd El‐Hafiz
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Synthesis of polyfunctionally substituted pyridazines

Liebigs Annalen der Chemie, 1990
AbstractThe pyridazines 3, 4, 5, and 7 were obtained by reaction of the hydrazone derivatives 2 with several reagents. By treatment of 5 with acetic acid/hydrochloric acid, the pyrazolo[4,3‐c]‐pyridazine 6 was formed. The pyrido‐pyridazine derivatives 8 and 9 were obtained by reaction of 2 and 3 with malononitrile and ethyl cyanoacetate, respectively ...
Said Ahmed Soliman Ghozlan, Mona Hassan Mohamed, Yehia Fakhr, Mohamed Hilmy Elnagdi   +3 more
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Stereoselective access to polyfunctionalized decalins

Tetrahedron Letters, 1994
As a model of a stereoselective approach to ajugareptansin 1, a versatile and straightforward access to polyfunctionalized cis or trans decalins is presented. It is based on a Lewis acid-mediated addition of furan to the unsaturated ketoester 3 followed by oxidative opening of the furan to give cis decalins by an aldolisation process.
Poirel, Cyrille, Renard, P.Y., Lallemand, J.Y.   +2 more
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POLYFUNCTIONALITY OF THE ARTICLE

GERMAN IN BASHKORTOSTAN: PROBLEMS AND PROSPECTS, 2022
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Study of polysemy and polyfunctionality in terminology

International Journal Of Literature And Languages
This thesis analyzes the linguistic features of the phenomenon of polyfunctionality and polysemy the opinions expressed by linguists to it. It is known that the feature of polyfunctionality of language units has been known to linguists since the beginning.But in different linguistic paradigms, the linguistic approach to this phenomenon ...
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polyfunctionality, n.

2023
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The syntax of modal polyfunctionality revisited

2014
This paper deals with the semantics and the syntax of modal constructions from a cross-linguistic perspective. It focuses on the syntactic representation of modal polyfunctionality, usually understood as the semantic alternation between root and epistemic readings.
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Studies with Polyfunctionally Substituted Heteroaromatics: Arylhydrazononitriles for the Synthesis of Polyfunctionally Substituted Azines

HETEROCYCLES, 1994
Ahmed Hafez Hussien Elghandour, Mohamed Hilmy Elnagdi, Abdel Fattah Ali Harb, Abdel Haleem Mostafa Hussien, Soud Abdel Meniem Metwally   +4 more
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Polymers and polyfunctionality

Transactions of the Faraday Society, 1936
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ChemInform Abstract: On the Polyfunctionality of S‐Betains

ChemInform, 1988
H. WITTMANN, E. ZIEGLER
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