Synthesis of (3,6-dihydro-2H-pyran-2-yl)phosphonate derivatives and investigation of catalyst effect on frontier molecular orbitals using DFT method [PDF]
, 2016 Hetero Diels-Alder (HDA) reactions between 2,3-dimethyl-1,3-butadiene and diethyl ester of aroyl phosphonates catalyzed by AlCl3 to afford (3,6-dihydro-2H-pyran-2-yl) phosphonate derivatives were investigated. Aroyl phosphonates with electron-withdrawing
Md. Shakhawoat Hossain (2880449) +13 more
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9-(4-Formylphenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione
IUCrData, 2018 In the title compound, C24H26O4, the central 4H-pyran ring adopts a flattened boat conformation, with the mean and maximum deviations of the ring being 0.0582 (6) and 0.1012 (3) Å, respectively.
R. Kalaivanan +2 more
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Dynamic stereoselective annulation via aldol-oxa-cyclization cascade reaction to afford spirooxindole pyran polycycles [PDF]
, 2019 Spiro polycyclic compounds bearing pyran ring systems are found in bioactive molecules, and we recently reported the construction of spirooxindole all-carbon polycycles.
Sohail, Muhammad, Tanaka, Fujie
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Synthesis of Benzothiophene-Fused Pyran Derivatives via Piperidine Promoted Domino Reaction
Heteroatom Chemistry, 2019 A new domino reaction between thioaurones and malononitrile has been reported. This reaction allows efficient access to benzothiophene-fused pyran derivatives in good yields under mild reaction conditions.
Shihang Li +3 more
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Designed Monomers and Polymers, 2017 Two novel acrylate monomers, [5-(benzyloxy)-4-oxo-4H-pyran-2-yl]methyl acrylate and {1-[(5-(benzyloxy)-4-oxo-4H-pyran-2-yl)methyl]-1,2,3-triazol-4-yl}methyl acrylate were synthesized by the reaction of 5-benzyloxy-2-(hydroxymethyl)-4H-pyran-4-one and 5 ...
Mahnaz Saraei +3 more
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Method Optimalization of 2H-pyran-2-one Synthesis [PDF]
, 2018 Bakalářská práce se zabývá optimalizací přípravy sloučenin s pyranovým kruhem, derivátů 2H-pyranu. V první, teoretické části, jsou navrženy a popsány tři možnosti přípravy 2H-pyran-2-onu, který by měl být prekurzorem syntézy 1,3-disubstituovaného kubanu,
Gřešková, Barbora
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Syntetické studie na 5,6-dihydro-2H-pyran-2-onech [PDF]
, 2018 Univerzita Karlova Farmaceutická fakulta v Hradci Králové Katedra organické a bioorganické chemie Kandidát: Gabriela Matejová Školiteľ: PharmDr. Marcel Špulák, Ph.D.
Matejová, Gabriela
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Elastic and electronically inelastic scattering of electrons by 2H-pyran and 4H-pyran molecules
Journal of Applied PhysicsWe report on elastic and electronically inelastic integral and differential cross sections for electron collisions with the 2H-pyran and 4H-pyran molecules. The scattering calculations were performed with the Schwinger multichannel method and aimed to (i) investigate the formation of resonant states, (ii) assign and compare the resonance spectrum of ...
Murilo O. Silva +3 more
openaire +1 more source
Synthesis of cyclopenta[c]pyran-3(5H)-one and cyclopenta[c]pyran-3(7H)-one as precursors of cyclopenta[c]pyrans [PDF]
, 2003 Die bisher unbekannten a-Pyrone Cyclopenta[c]pyran-3(5H)-on und Cyclopenta[c]pyran-3(7H)-on wurden auf zwei unabhängigen Synthesewegen hergestellt. Die Reaktivität der neuen a-Pyrone wurde untersucht.
Güllük, Eduard
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Synthetic studies on 5,6-dihydro-2H-pyran-2-ones [PDF]
, 2018 Charles University Faculty of Pharmacy in Hradec Králové Department of Organic and Bioorganic Chemistry Candidate: Gabriela Matejová Supervisor: PharmDr. Marcel Špulák, Ph.D.
Matejová, Gabriela
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