Electrochemical and optical studies of new symmetrical and unsymmetrical imines with thiazole and thiophene moieties
Sign Up to like & getrecommendations! Published in 2020 at "Electrochimica Acta"
DOI: 10.1016/j.electacta.2019.135476
Abstract: Abstract In this study new symmetrical and unsymmetrical imines based on 4-[4-(4-fluorophenyl)1,3-thiazol-2-yl]aniline and 2,2′,5′,2”-terthiophene-5,5”-dicarboxaldehyde or 2,2’:5′, 2’’-terthiophene-5-carboxaldehyde, respectively, were synthesized by melt condensation with the yield of 86% and 40%. The 5% weight loss of… read more here.
Keywords: electrochemical optical; blj; unsymmetrical imines; symmetrical unsymmetrical ... See more keywords
Nickel-catalyzed cross-coupling of organoaluminum reagents with alkynylhalides for the synthesis of symmetrical and unsymmetrical conjugated 1,3-diynes derivatives
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2019.121040
Abstract: Abstract We describe a convenient method for the synthesis of symmetrical and unsymmetrical conjugated 1,3-diynes from cross-coupling reactions of organoaluminum with alkynylhalides: The cross-coupling reaction of organoaluminum (0.75 mmol) with alkynylhalides (0.5 mmol) mediated by Ni(acac)2 (5 mol%)/DPPE(10 mol%)… read more here.
Keywords: conjugated diynes; synthesis symmetrical; unsymmetrical conjugated; symmetrical unsymmetrical ... See more keywords
Synthesis of symmetrical / unsymmetrical thiosulfonates through the disproportionate coupling reaction of sulfonyl hydrazide mediated by phosphomolybdic acid
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DOI: 10.1016/j.tetlet.2020.152757
Abstract: Abstract Phosphomolybdic acid (H3PMo12O40) is reported as a green low-cost catalyst for the synthesis of symmetrical / unsymmetrical thiosulfonates via the disproportionate coupling reaction of sulfonyl hydrazide. The attributes of this reported catalytic system include… read more here.
Keywords: disproportionate coupling; phosphomolybdic acid; synthesis symmetrical; symmetrical unsymmetrical ... See more keywords
Direct Catalytic Symmetrical, Unsymmetrical N,N-Dialkylation and Cyclization of Acylhydrazides Using Alcohols.
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DOI: 10.1021/acs.orglett.0c02369
Abstract: Herein, direct N,N-dialkylation of acylhydrazides using alcohols is reported. This catalytic protocol provides one-pot synthesis of both symmetrical and unsymmetrical N,N-disubstituted acylhydrazides using an assortment of primary and secondary alcohols with remarkable selectivity and excellent… read more here.
Keywords: acylhydrazides using; dialkylation; cyclization acylhydrazides; using alcohols ... See more keywords
Dual Role of Glyoxal in Metal-Free Dicarbonylation Reaction: Synthesis of Symmetrical and Unsymmetrical Dicarbonyl Imidazoheterocycles
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DOI: 10.1021/acsomega.9b00716
Abstract: A practical and efficient method has been developed for the dicarbonylation of imidazoheterocycles using glyoxals as dicarbonyl precursors under metal-free conditions in acetic acid. A series of symmetrical and unsymmetrical dicarbonyl imidazoheterocycles was synthesized in… read more here.
Keywords: unsymmetrical dicarbonyl; dicarbonyl; dicarbonyl imidazoheterocycles; symmetrical unsymmetrical ... See more keywords
Inter-relationships among elastic constants for symmetrical or unsymmetrical laminates with cracked 90-plies
Sign Up to like & getrecommendations! Published in 2019 at "Mechanics of Advanced Materials and Structures"
DOI: 10.1080/15376494.2018.1472343
Abstract: Abstract The relations between the stiffness components of a symmetrical or unsymmetrical laminate having trans-verse matrix cracks only in the 90-degree laminas are explored in this work. The crack closure condition for these laminates under… read more here.
Keywords: constants symmetrical; elastic constants; relationships among; inter relationships ... See more keywords