Brønsted Acid Promoted Cyclization of Cross‐Conjugated Enynones into Dihydropyran‐4‐ones
Sign Up to like & getrecommendations! Published in 2017 at "European Journal of Organic Chemistry"
DOI: 10.1002/ejoc.201700423
Abstract: In triflic acid or sulfuric acid, diaryl-substituted cross-conjugated enynones undergo addition of the acid to the carbon–carbon triple bond to afford the corresponding vinyl triflates or sulfates. The vinyl triflates are stable under aqueous workup,… read more here.
Keywords: cyclization; vinyl triflates; conjugated enynones; dihydropyran ones ... See more keywords
Long-distance electronic coupling in diferrocenyl compounds with cross-conjugated germinal-diethynylethene bridges
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2018.01.052
Abstract: Abstract A series of germinal-diethynylethene (gem-DEE) bridged diferrocenyl compounds, including 1,1-[bis(ferrocenylethynyl)methylene]cyclohexane (1), 1,1-[bis(ferrocenylethynyl)methylene]tetrahydro-2H-pyran (2), and 1,1-[bis(ferrocenylethynyl)methylene]tetrahydro-2H-thiopyran (3) were synthesized and characterized. The Fe⋯Fe distance between the two ferrocenyl termini reaches up to ∼9 A for compounds… read more here.
Keywords: germinal diethynylethene; diferrocenyl compounds; distance; electronic coupling ... See more keywords
Synthesis and photovoltaic studies on novel fluorene based cross-conjugated donor-acceptor type polymers
Sign Up to like & getrecommendations! Published in 2017 at "Organic Electronics"
DOI: 10.1016/j.orgel.2016.10.039
Abstract: Abstract Direct arylation polymerization (DAP) is emerging as a promising green, cheap, simple, and efficient environment friendly method for synthesizing conjugated polymers without involving any organometallic reagent. We report fluorene based novel cross-conjugated alternate and… read more here.
Keywords: synthesis photovoltaic; conjugated polymers; cross; fluorene based ... See more keywords
Ferrocene-containing cross-conjugated polymers synthesized by palladium-catalyzed cross-coupling polymerization
Sign Up to like & getrecommendations! Published in 2020 at "Polymer"
DOI: 10.1016/j.polymer.2020.122827
Abstract: Abstract We have exploited an extremely efficient and versatile route to prepare ferrocene-containing cross-conjugated polymers (oligomers) in the main-chain. Using a variety of 1,1′-disubstituted ferrocenyl ketone-derived N-tosylhydrazones, reaction with aryl halides under palladium-catalysis gave 14… read more here.
Keywords: polymers oligomers; conjugated polymers; cross; containing cross ... See more keywords
Electropolymerization, spectroelectrochemistry and electrochromic properties of cross-conjugated and conjugated selenophenothiophenes with thiophene bridge
Sign Up to like & getrecommendations! Published in 2021 at "Synthetic Metals"
DOI: 10.1016/j.synthmet.2021.116836
Abstract: Abstract Two novel selenophenothiophene homopolymers, P(SeT1) and P(SeT2), were electrochemically prepared for the first time from their corresponding monomers (i) conjugated 2,5-di(thiophen-2-yl)selenopheno[3,2-b]thiophene (1) and (ii) cross-conjugated 2,5-di(thiophen-2-yl)selenopheno[2,3-b]thiophene (2) to explore their electrochromic behaviors. The effects… read more here.
Keywords: electrochromic properties; spectroelectrochemistry electrochromic; properties cross; cross conjugated ... See more keywords
Di- and trinuclear sandwich complexes of a cross-conjugated fulvene.
Sign Up to like & getrecommendations! Published in 2023 at "Dalton transactions"
DOI: 10.1039/d2dt03521a
Abstract: We report di- and trinuclear palladium sandwich complexes of cross-π-conjugated fulvenes. Structural and theoretical analysis revealed that a fulvene sandwich framework holds a metal-metal bonded moiety, where the dinuclear and trinuclear bonds feature strong donation… read more here.
Keywords: sandwich; trinuclear sandwich; sandwich complexes; cross conjugated ... See more keywords
Lewis Acid-Catalyzed Formal (4+2)-Cycloaddition between Cross-Conjugated Azatrienes and Styrylmalonates: The Way to Functionalized Quinolizidine Precursors
Sign Up to like & getrecommendations! Published in 2022 at "Molecules"
DOI: 10.3390/molecules28010088
Abstract: Quinolizidine and azaphenalene alkaloids are common in nature and exhibit a pharmaceutical activity, which stirs up increased interest in expanding the range of methods for the synthesis of the corresponding derivatives. In this work, we… read more here.
Keywords: catalyzed formal; cross conjugated; conjugated azatrienes; lewis acid ... See more keywords
A General Synthesis of Cross-Conjugated Enynones through Pd Catalyzed Sonogashira Coupling with Triazine Esters
Sign Up to like & getrecommendations! Published in 2023 at "Molecules"
DOI: 10.3390/molecules28114364
Abstract: The palladium-catalyzed Sonogashira coupling of α, β-unsaturated acid derivatives offers a diversity-oriented synthetic strategy for cross-conjugated enynones. However, the susceptibility of the unsaturated C-C bonds adjacent to the carbonyl group toward Pd catalysts makes the… read more here.
Keywords: triazine esters; cross conjugated; cross; conjugated enynones ... See more keywords