Results 1 to 10 of about 27,650 (311)

Diaza-1,3-butadienes as Useful Intermediate in Heterocycles Synthesis [PDF]

Molecules, 2022
Many heterocyclic compounds can be synthetized using diaza-1,3-butadienes (DADs) as key structural precursors. Isolated and in situ diaza-1,3-butadienes, produced from their respective precursors (typically imines and hydrazones) under a variety of ...
Jorge Heredia-Moya, Daniel A. Zurita, José Eduardo Cadena-Cruz, Christian D. Alcívar-León   +3 more
doaj   +2 more sources

α-Diimine Cisplatin Derivatives: Synthesis, Structure, Cyclic Voltammetry and Cytotoxicity [PDF]

Molecules, 2022
Three new Pt(II) complexes [(dpp-DAD)PtCl2] (I), [(Mes-DAD(Me)2)PtCl2] (II) and [(dpp-DAD(Me)2)PtCl2] (III) were synthesized by the direct reaction of [(CH3CN)2PtCl2] and corresponding redox-active 1,4-diaza-1,3-butadienes (DAD).
Dmitriy S. Yambulatov, Irina A. Lutsenko, Stanislav A. Nikolaevskii, Pavel A. Petrov, Ivan V. Smolyaninov, Irina K. Malyants, Victoria O. Shender, Mikhail A. Kiskin, Alexey A. Sidorov, Nadezhda T. Berberova, Igor L. Eremenko   +10 more
doaj   +2 more sources

Michael addition of P-nucleophiles to azoalkenes provides simple access to phosphine oxides bearing an alkylhydrazone moiety [PDF]

Frontiers in Chemistry, 2023
β-Hydrazonophosphine oxides are precursors of useful organophosphorus compounds, including phosphorylated N-heterocycles, α-aminophosphonates, and vinylphosphonates.
Alexandr O. Kokuev, Alexey Yu. Sukhorukov   +1 more
doaj   +2 more sources

Domino reactions of chromones with activated carbonyl compounds [PDF]

Beilstein Journal of Organic Chemistry
Domino reactions of chromones with activated carbonyl compounds, such as dimethyl acetone-1,3-dicarboxylate and 1,3-diphenylacetone, and with 1,3-bis(silyloxy)-1,3-butadienes, electroneutral equivalents of 1,3-dicarbonyl dianions, allow for a convenient ...
Peter Langer
doaj   +2 more sources

BUTADIENE [PDF]

Chemical & Engineering News Archive, 1945
openaire   +2 more sources

Electrochemical One-Step Synthesis of Alkyne Sulfonates and Sulfonamides: Building Blocks for Highly Substituted Alkenes and 1,3-Butadienes [PDF]

JACS Au
Meysam Azizzade, Florian A. Breitschaft, Siegfried R. Waldvogel, Till Opatz   +3 more
doaj   +2 more sources

One-Pot Synthesis of Push–Pull Butadienes from 1,3-Diethyl-2-thiobarbituric Acid and Propargylic Alcohols

Molbank, 2022
A new synthetic procedure for obtaining two previously reported donor-acceptor butadiene dyes, namely 5-(3,3-bis(4-methoxyphenyl)allylidene)-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione and 5-(3,3-bis(4-(dimethylamino)phenyl)allylidene)-1,3 ...
Javier Francos, Victorio Cadierno
doaj   +1 more source

Synthesis and Characterization of Multiple Functionalized Cyclohexanone Using Diels–Alder Reaction of α-Nitrocinnamate

Reactions, 2022
A systematic study of the Diels–Alder reaction of α-nitrocinnamate was performed. The reaction of p-substituted α-nitrocinnamate with 2,3-dimethyl-1,3-butadienes smoothly proceeded regardless of the p-substituent, which was either an electron-donating or
Takumi Hamada, Kento Iwai, Nagatoshi Nishiwaki   +2 more
doaj   +1 more source

Rotational Barrier and Conjugation: Theoretical Study of Resonance Stabilization of Various Substituents for the Donors NH₂ and OCH₃ in Substituted 1,3-Butadienes

Indonesian Journal of Chemistry, 2019
The barrier to internal rotation around the central C2–C3 single bond of a series of (1E)-monosubstituted 1,3-butadienes and (1E,3E)-1-Y-4-X-disubstituted butadienes, with Y=NH2 or OCH3 and X=NO2, CHO, COOH, CN, CF3, Cl or F, were studied at the density ...
Ali Hussain Yateem
doaj   +1 more source

(E)-1,1,1-Trifluoro-6,6-bis(4-methoxyphenyl)hexa-3,5-dien-2-one

Molbank, 2020
The title compound was obtained in high yield (84%) via the deacetylation of 3-(3,3-bis(4-methoxyphenyl)allylidene)-1,1,1,5,5,5-hexafluoro-2,4-pentanedione with K2CO3 in refluxing methanol. This previously unreported compound has been fully characterized
Victorio Cadierno
doaj   +1 more source