Results 31 to 40 of about 14,858 (206)
Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic dienes
Beilstein Journal of Organic Chemistry, 2021 The Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic 1,3-dienes was investigated. A series of novel monofluorinated norbornenes was prepared in up to 97% yield.
Savva A. Ponomarev +7 more
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[2 + 2]-Cycloaddition of a stabilised vinyl cation with cyclopentadiene; X-ray crystal structure of the 2 : 1 addition product [PDF]
, 1981 Lewis acid-catalysed reaction of 1,1-dimethyl-3-phenylprop-2-ynyl chloride with cyclopentadiene yields a 2 : 1 addition product via[2 + 2]-cycloaddition of an intermediate allenyl ...
Kaliba, Claus +2 more
core +1 more source
A self optimizing synthetic organic reactor system using real-time in-line NMR spectroscopy [PDF]
, 2015 A configurable platform for synthetic chemistry incorporating an in-line benchtop NMR that is capable of monitoring and controlling organic reactions in real-time is presented.
Cronin, Leroy +3 more
core +2 more sources
Nature Communications, 2019 Due to the low ring strain and facile dimerization, ring-opening metathesis polymerization of cyclopentadiene, readily obtainable from petroleum feedstock, has not been realized.
Kitaek Song +6 more
doaj +1 more source
2-Substituted-1,3,2-dithioborolans as Chiral Lewis Acid Catalysts
Molecules, 2000 1,3,2-Dithioborolans substituted at the 2-position with various homochiral groups can act as chiral Lewis acids in the Diels-Alder reaction between crotonaldehyde or methacrolein with cyclopentadiene.
Paul Glynn, Joshua Howarth
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Synthesis of Nitroxide-Annulated Carbocycles and Heterocycles [PDF]
, 2012 New, pyrroline nitroxide annulated lactones, polycycles, and maleimide were synthesized by classical and microwave-assisted methodology. We report the application of the metathesis reaction in the presence of nitroxide yielding a pyrroline nitroxide ...
Berente, Zoltán +4 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2012 A new chiral Brønsted acid-catalyzed aza-Diels–Alder reaction of cyclic C-acylimines with cyclopentadiene has been developed. The reaction provides optically active aza-tetracycles in good yields with high diastereo- and enantioselectivities under mild ...
Magnus Rueping, Sadiya Raja
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N′-(4-Hydroxybenzylidene)ferrocene-1-carbohydrazide
Acta Crystallographica Section E, 2012 In the title compound, [Fe(C5H5)2(C13H11N2O2)], the dihedral angle between the benzene ring and the cyclopentadiene ring bonded to the carbonyl group is 26.1 (2)°.
Wen-juan Li, Manman Song, Yan Xu
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Hydrazones as Singular Reagents in Asymmetric Organocatalysis [PDF]
, 2016 This Minireview summarizes strategies and developments regarding the use of hydrazones as reagents in asymmetric organocatalysis, their distinct roles in nucleophile–electrophile, cycloaddition, and cyclization reactions.
Fernández Fernández, Rosario Fátima +4 more
core +1 more source
1-Diphenylmethylene-2-(9H-fluoren-9-ylidene)hydrazine
Acta Crystallographica Section E, 2010 In the title molecule, C26H18N2, the 9H-fluorene unit is almost planar, as the cyclopentadiene ring makes dihedral angles of 1.12 (6) and 1.46 (6)° with the fused benzene rings. The dihedral angle between the two phenyl rings
R. Archana +4 more
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