Results 31 to 40 of about 17,659,431 (225)
A New Synthesis of 2-Pyrones [PDF]
Bulletin of the Chemical Society of Japan, 1975 Abstract The reaction of sodium salt of penta-2,4-dienoic acids with lithium chloropalladite in a polar solvent such as water led to the formation of 2-pyrone derivatives.
Taeko Izumi, Akira Kasahara
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Isothiourea-mediated one-pot synthesis of trifluoromethyl substituted 2-pyrones
, 2014 The authors thank the Royal Society for a University Research Fellowship (ADS) and the EPSRC (EP/J018139/1, DSBD) for funding.A one-pot isothiourea-mediated Michael addition/lactonization/thiol elimination cascade sequence for the formation of 4,6 ...
Smith, Andrew D. +9 more
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, 2016 A base-promoted domino reaction of 2-acyl-1-chlorocyclopropaneformic esters with amines is described. In the presence of inorganic bases like Cs2CO3 or Mg(OEt)2, the reaction proceeded smoothly in acetonitrile to afford 2-pyrone derivatives in modest to
Yuequan Zhu (1695862) +1 more
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Convergent Total Synthesis of 16β‐Hydroxylpseudobufarenogin
Angewandte Chemie, Volume 138, Issue 23, 1 June 2026.We present a novel convergent strategy that integrates Pd/Ag‐promoted Suzuki–Miyaura coupling with Ir‐catalyzed radical‐relay cyclization, enabling the first total synthesis of 16β‐hydroxylpseudobufarenogin. This approach is broadly applicable to the total synthesis of various oxygenated bufadienolides by simply modifying the fragment structures ...
Wataru Shigematsu +3 more
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The role of substituents in retro Diels-Alder extrusion of CO2 from 2(H)-pyrone cycloadducts [PDF]
, 2016 An experimental and computational investigation is conducted into the role of substituents in retro Diels–Alder extrusion of CO2 from 2-oxa-bicyclo[2.2.2]oct-5-en-3-ones.
Abdullahi, Mohamed H. +9 more
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η1-Bound 2-Pyrone Complexes of Molybdenum and Iron: A Synthetic and Structural Study
, 2016 Oxidative cleavage of the [Mo(CO)3(η5-C5H5)]2 with AgBF4 in the presence of 4-methoxy-6-methyl-2-pyrone or 3-bromo-4-methoxy-6-methyl-2-pyrone results in the formation of and respectively. Single-crystal X-ray diffraction studies have demonstrated that
Jason M. Lynam (1364136) +3 more
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3-(9H-Carbazol-9-yl)-2H-chromen-2-one
Acta Crystallographica Section E, 2011 The title compound, C21H13NO2, was prepared as an example of a new synthesis of carbazoles from a cyclic dibenzo-iodolium salt via a twofold Pd-catalysed arylation of a primary amine.
Julien Letessier +2 more
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, 2016 3,5-Dibromo-2-pyrone underwent facile Pd(0)-catalyzed coupling reactions with various alkynes to give rise to the corresponding 3-alkynyl-5-bromo-2-pyrones with good to excellent chemical yields and ...
Jung-Sang Park (3030399) +2 more
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Acta Crystallographica Section E, 2013 In the title compound, C19H20N2O6, the pyrone and pyran rings adopt envelope conformations with the same common C atom as the flap, the dihedral angle between the planes of the remaining ring atoms being 68.27 (4)°.
G. Jagadeesan +3 more
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, 2016 The synthesis of new 2-pyrone-based hydrazones has been prepared by the coupling of 6-methyl-2H-furo[3,2-c]pyran-3,4-dione with diazonium salts, obtained by diazotization of aniline derivatives.
Malika Makhloufi-Chebli (3607037) +7 more
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