T‐Shaped 8‐Aryl(ethynyl)‐Substituted Psoralens With Tunable Charge‐Transfer Absorption
European Journal of Organic Chemistry, Volume 29, Issue 8, 25 February 2026.Starting from 8‐methoxypsoralen, new 8‐arylated and 8‐alkynylated psoralen derivatives are accessible by cross‐coupling. These T‐shaped π‐expanded chromophores are luminescent and photophysics reveal a highly polar excited state with tunable charge‐transfer character.
Lena T. Leusch, Thomas J. J. Müller
wiley +1 more source
A combined experimental and theoretical study of the polar [3+2] cycloaddition of electrophilically activated carbonyl ylides with aldehydes and imines [PDF]
, 2009 International audienceNumerous 2,5-diaryl-1,3-dioxolane-4,4-dicarbonitriles and 2,4-diphenyl-1,3-oxazolidine-5,5- dicarbonitriles have been synthesized by [3+2] cycloaddition reactions between carbonyl ylides generated from epoxides, and aldehydes or ...
Bentabed-Ababsa, Ghenia +7 more
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Journal of Synthetic Organic Chemistry, Japan, 1968 1, 3-Dipolar cycloaddition reaction of diazomethane with 5-nitro-2-furylacrylic acid gave 4- (5'-nitro-2'-furyl) -3-carbomethoxypyrazoline (3), mp 184485°C, in 80% yield. A similar reaction with 5-nitro-2-furylpropiolic acid afforded the corresponding isomeric mixture of the 2-pyrazole derivatives in 25% yield. (1) was refluxed in toluene to afford 2- (
Tadashi SASAKI, Katsuhiko SHOJI
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, 2012 Organic Chemistry Labor~ tory, Sikkim Government College, Gangtok-737 102, Sikkim, India E-mail : bchakraborty42@gmail.com Manuscript received 20 April 2011, revised 19 September. 2011, accepted 17 October 2011 Microwave assisted 1,3-dipolar cycloaddition reactions of novel dihydropyran derived nitrone with various dipolarophiles have been studied in ...
Chakraborty, Bhaskar +1 more
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Syntheses of Isoxazoline-Based Amino Acids by Cycloaddition of Nitrile Oxides and Their Conversion into Highly Functionalized Bioactive Amino Acid Derivatives [PDF]
, 2012 The present account illustrates the syntheses of isoxazoline- based amino acids by the cycloaddition of 1,3-dipolar nitrile oxides to the C–C double bond of unsaturated amino acid derivatives, with focus on the regio- and stereoselectivities of the ...
Fülöp, Ferenc +2 more
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Recent Applications of the Simple Hydrocarbon Cyclooctatetrene as a Starting Material for Complex Molecule Synthesis [PDF]
, 2012 Cyclooctatetraene [COT], a simple non-aromatic cyclic polyene, is capable of undergoing a variety of oxidation and cycloaddition reactions to afford polycyclic structures.
Donaldson, William, Glaeske, Kevin W
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Transition metal catalyzed 1-3-dipolar cycloaddition of carbethoxycarbene to acrylonitrile [PDF]
Tetrahedron Letters, 1974 Paulissen, R. +3 more
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Mechanistic impact of oxime formation accompanying 1,3-dipolar cycloadditions of nitrile oxides [PDF]
, 1989 Baran, Janusz, Mayr, Herbert
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Competing [2 + 3] and [4 + 3] cycloadditions of C,N-diphenylnitrone with 1,3-dienes. Evidence for thermally nonequilibrated intermediates [PDF]
, 1989 Baran, Janusz, Mayr, Herbert
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